Finding the Fourth Proportional to 261,687.97, 392,531.96 and 72,149.79
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Solution
The fourth proportional to 261,687.97, 392,531.96 and 72,149.79 is: 108,224.69
Step by Step Solution
- Step 1: Write the proportion equation
261,687.97 : 392,531.96 = 72,149.79 : x - Step 2: Convert to fraction form
261,687.97/392,531.96 = 72,149.79/x - Step 3: Cross multiply
261,687.97x = 392,531.96 × 72,149.79 - Step 4: Simplify right side
261,687.97x = 28,321,098,482.29 - Step 5: Solve for x
x = 28,321,098,482.29/261,687.97 - Step 6: Final answer
x = 108,224.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.