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Finding the Fourth Proportional to 442,753.20, 664,129.80 and 363,956.40

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Solution

The fourth proportional to 442,753.20, 664,129.80 and 363,956.40 is: 545,934.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,753.20 : 664,129.80 = 363,956.40 : x
  2. Step 2: Convert to fraction form
    442,753.20/664,129.80 = 363,956.40/x
  3. Step 3: Cross multiply
    442,753.20x = 664,129.80 × 363,956.40
  4. Step 4: Simplify right side
    442,753.20x = 241,714,291,140.72
  5. Step 5: Solve for x
    x = 241,714,291,140.72/442,753.20
  6. Step 6: Final answer
    x = 545,934.60

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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.