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Finding the Fourth Proportional to 431,854.60, 647,758.52 and 132,336.04

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Solution

The fourth proportional to 431,854.60, 647,758.52 and 132,336.04 is: 198,496.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,854.60 : 647,758.52 = 132,336.04 : x
  2. Step 2: Convert to fraction form
    431,854.60/647,758.52 = 132,336.04/x
  3. Step 3: Cross multiply
    431,854.60x = 647,758.52 × 132,336.04
  4. Step 4: Simplify right side
    431,854.60x = 85,721,796,124.50
  5. Step 5: Solve for x
    x = 85,721,796,124.50/431,854.60
  6. Step 6: Final answer
    x = 198,496.89

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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.