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Finding the Fourth Proportional to 487,454.76, 731,181.06 and 132,520.32

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Solution

The fourth proportional to 487,454.76, 731,181.06 and 132,520.32 is: 198,780.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454.76 : 731,181.06 = 132,520.32 : x
  2. Step 2: Convert to fraction form
    487,454.76/731,181.06 = 132,520.32/x
  3. Step 3: Cross multiply
    487,454.76x = 731,181.06 × 132,520.32
  4. Step 4: Simplify right side
    487,454.76x = 96,896,348,049.14
  5. Step 5: Solve for x
    x = 96,896,348,049.14/487,454.76
  6. Step 6: Final answer
    x = 198,780.19

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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.