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Finding the Fourth Proportional to 378,191.64, 567,354.92 and 125,487.28

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Solution

The fourth proportional to 378,191.64, 567,354.92 and 125,487.28 is: 188,253.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,191.64 : 567,354.92 = 125,487.28 : x
  2. Step 2: Convert to fraction form
    378,191.64/567,354.92 = 125,487.28/x
  3. Step 3: Cross multiply
    378,191.64x = 567,354.92 × 125,487.28
  4. Step 4: Simplify right side
    378,191.64x = 71,195,825,705.42
  5. Step 5: Solve for x
    x = 71,195,825,705.42/378,191.64
  6. Step 6: Final answer
    x = 188,253.30

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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.