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Finding the Fourth Proportional to 487,685.30, 731,454.03 and 132,726.98

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Solution

The fourth proportional to 487,685.30, 731,454.03 and 132,726.98 is: 199,070.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,685.30 : 731,454.03 = 132,726.98 : x
  2. Step 2: Convert to fraction form
    487,685.30/731,454.03 = 132,726.98/x
  3. Step 3: Cross multiply
    487,685.30x = 731,454.03 × 132,726.98
  4. Step 4: Simplify right side
    487,685.30x = 97,083,680,753.46
  5. Step 5: Solve for x
    x = 97,083,680,753.46/487,685.30
  6. Step 6: Final answer
    x = 199,070.35

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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.