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Finding the Fourth Proportional to 442,925.20, 664,452.60 and 143,354.80

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Solution

The fourth proportional to 442,925.20, 664,452.60 and 143,354.80 is: 215,053.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,925.20 : 664,452.60 = 143,354.80 : x
  2. Step 2: Convert to fraction form
    442,925.20/664,452.60 = 143,354.80/x
  3. Step 3: Cross multiply
    442,925.20x = 664,452.60 × 143,354.80
  4. Step 4: Simplify right side
    442,925.20x = 95,252,469,582.48
  5. Step 5: Solve for x
    x = 95,252,469,582.48/442,925.20
  6. Step 6: Final answer
    x = 215,053.17

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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.