Home / 431,734.60-647,545.20-132,245.20

Finding the Fourth Proportional to 431,734.60, 647,545.20 and 132,245.20

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Solution

The fourth proportional to 431,734.60, 647,545.20 and 132,245.20 is: 198,350.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,734.60 : 647,545.20 = 132,245.20 : x
  2. Step 2: Convert to fraction form
    431,734.60/647,545.20 = 132,245.20/x
  3. Step 3: Cross multiply
    431,734.60x = 647,545.20 × 132,245.20
  4. Step 4: Simplify right side
    431,734.60x = 85,634,744,483.04
  5. Step 5: Solve for x
    x = 85,634,744,483.04/431,734.60
  6. Step 6: Final answer
    x = 198,350.43

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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.