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Finding the Fourth Proportional to 378,505.73, 567,854.08 and 125,787.56

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Solution

The fourth proportional to 378,505.73, 567,854.08 and 125,787.56 is: 188,713.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,505.73 : 567,854.08 = 125,787.56 : x
  2. Step 2: Convert to fraction form
    378,505.73/567,854.08 = 125,787.56/x
  3. Step 3: Cross multiply
    378,505.73x = 567,854.08 × 125,787.56
  4. Step 4: Simplify right side
    378,505.73x = 71,428,976,005.51
  5. Step 5: Solve for x
    x = 71,428,976,005.51/378,505.73
  6. Step 6: Final answer
    x = 188,713.06

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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.