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Finding the Fourth Proportional to 487,690.73, 731,462.18 and 132,732.41

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Solution

The fourth proportional to 487,690.73, 731,462.18 and 132,732.41 is: 199,078.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,690.73 : 731,462.18 = 132,732.41 : x
  2. Step 2: Convert to fraction form
    487,690.73/731,462.18 = 132,732.41/x
  3. Step 3: Cross multiply
    487,690.73x = 731,462.18 × 132,732.41
  4. Step 4: Simplify right side
    487,690.73x = 97,088,737,975.25
  5. Step 5: Solve for x
    x = 97,088,737,975.25/487,690.73
  6. Step 6: Final answer
    x = 199,078.50

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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.