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Finding the Fourth Proportional to 487,687.29, 731,457.03 and 132,728.98

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Solution

The fourth proportional to 487,687.29, 731,457.03 and 132,728.98 is: 199,073.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,687.29 : 731,457.03 = 132,728.98 : x
  2. Step 2: Convert to fraction form
    487,687.29/731,457.03 = 132,728.98/x
  3. Step 3: Cross multiply
    487,687.29x = 731,457.03 × 132,728.98
  4. Step 4: Simplify right side
    487,687.29x = 97,085,545,505.73
  5. Step 5: Solve for x
    x = 97,085,545,505.73/487,687.29
  6. Step 6: Final answer
    x = 199,073.36

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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.