Finding the Third Proportional to 121,428.75 and 257,655.75
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Solution
The third proportional to 121,428.75 and 257,655.75 is: 546,711.43
Step by Step Solution
- Step 1: Write the proportion equation
121,428.75 : 257,655.75 = 257,655.75 : x - Step 2: Convert to fraction form
121,428.75/257,655.75 = 257,655.75/x - Step 3: Cross multiply
121,428.75x = 257,655.75 × 257,655.75 - Step 4: Simplify right side
121,428.75x = 66,386,485,508.06 - Step 5: Solve for x
x = 66,386,485,508.06/121,428.75 - Step 6: Final answer
x = 546,711.43
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These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.