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Finding the Fourth Proportional to 331,445.20, 496,390.20 and 225,691.60

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Solution

The fourth proportional to 331,445.20, 496,390.20 and 225,691.60 is: 338,007.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,445.20 : 496,390.20 = 225,691.60 : x
  2. Step 2: Convert to fraction form
    331,445.20/496,390.20 = 225,691.60/x
  3. Step 3: Cross multiply
    331,445.20x = 496,390.20 × 225,691.60
  4. Step 4: Simplify right side
    331,445.20x = 112,031,098,462.32
  5. Step 5: Solve for x
    x = 112,031,098,462.32/331,445.20
  6. Step 6: Final answer
    x = 338,007.91

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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.