Finding the Fourth Proportional to 498,355.98, 687,721.35 and 272,003.10
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Solution
The fourth proportional to 498,355.98, 687,721.35 and 272,003.10 is: 375,358.87
Step by Step Solution
- Step 1: Write the proportion equation
498,355.98 : 687,721.35 = 272,003.10 : x - Step 2: Convert to fraction form
498,355.98/687,721.35 = 272,003.10/x - Step 3: Cross multiply
498,355.98x = 687,721.35 × 272,003.10 - Step 4: Simplify right side
498,355.98x = 187,062,339,136.19 - Step 5: Solve for x
x = 187,062,339,136.19/498,355.98 - Step 6: Final answer
x = 375,358.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.