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Simplify 309:15
The simplified ratio of 309:15 is 103:5. Free ratio calculator with GCD breakdown.
103:5
GCD of 309 and 15 is 3. Simplified: 309/3 : 15/3 = 103:5
How This Was Calculated
Simplification: Divide both terms by their GCD.A:B = (A/GCD) : (B/GCD)
Solving proportions: A/B = C/D — cross-multiply to find the missing value.
Scaling: Multiply both terms by the scale factor.
Quick Reference Table
| Input | Result |
|---|---|
| 309 / 10 | 309:10 |
| 309 / 13 | 309:13 |
| 309 / 14 | 309:14 |
| 309 / 16 | 309:16 |
| 309 / 17 | 309:17 |
| 309 / 20 | 309:20 |
Frequently Asked Questions
What is a ratio?
A ratio compares two quantities by division.
How do I simplify a ratio?
Divide both numbers by their greatest common divisor (GCD).
Can ratios have decimal values?
Yes, but simplified ratios are typically expressed as whole numbers.