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Finding the Fourth Proportional to 442,900.39, 664,455.94 and 143,380.94

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Solution

The fourth proportional to 442,900.39, 664,455.94 and 143,380.94 is: 215,105.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,900.39 : 664,455.94 = 143,380.94 : x
  2. Step 2: Convert to fraction form
    442,900.39/664,455.94 = 143,380.94/x
  3. Step 3: Cross multiply
    442,900.39x = 664,455.94 × 143,380.94
  4. Step 4: Simplify right side
    442,900.39x = 95,270,317,265.78
  5. Step 5: Solve for x
    x = 95,270,317,265.78/442,900.39
  6. Step 6: Final answer
    x = 215,105.52

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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.