Finding the Third Proportional to 128,265 and 278,430.75
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Solution
The third proportional to 128,265 and 278,430.75 is: 604,402.47
Step by Step Solution
- Step 1: Write the proportion equation
128,265 : 278,430.75 = 278,430.75 : x - Step 2: Convert to fraction form
128,265/278,430.75 = 278,430.75/x - Step 3: Cross multiply
128,265x = 278,430.75 × 278,430.75 - Step 4: Simplify right side
128,265x = 77,523,682,545.56 - Step 5: Solve for x
x = 77,523,682,545.56/128,265 - Step 6: Final answer
x = 604,402.47
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Why These Related Problems?
These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.