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Finding the Fourth Proportional to 378,315.38, 567,331.56 and 125,548.74

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Solution

The fourth proportional to 378,315.38, 567,331.56 and 125,548.74 is: 188,276.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,315.38 : 567,331.56 = 125,548.74 : x
  2. Step 2: Convert to fraction form
    378,315.38/567,331.56 = 125,548.74/x
  3. Step 3: Cross multiply
    378,315.38x = 567,331.56 × 125,548.74
  4. Step 4: Simplify right side
    378,315.38x = 71,227,762,520.23
  5. Step 5: Solve for x
    x = 71,227,762,520.23/378,315.38
  6. Step 6: Final answer
    x = 188,276.15

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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.