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Finding the Fourth Proportional to 378,340.78, 567,387.68 and 125,553.35

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Solution

The fourth proportional to 378,340.78, 567,387.68 and 125,553.35 is: 188,289.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,340.78 : 567,387.68 = 125,553.35 : x
  2. Step 2: Convert to fraction form
    378,340.78/567,387.68 = 125,553.35/x
  3. Step 3: Cross multiply
    378,340.78x = 567,387.68 × 125,553.35
  4. Step 4: Simplify right side
    378,340.78x = 71,237,423,972.73
  5. Step 5: Solve for x
    x = 71,237,423,972.73/378,340.78
  6. Step 6: Final answer
    x = 188,289.04

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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.