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Finding the Fourth Proportional to 378,773.31, 524,964.54 and 371,687.43

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Solution

The fourth proportional to 378,773.31, 524,964.54 and 371,687.43 is: 515,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,773.31 : 524,964.54 = 371,687.43 : x
  2. Step 2: Convert to fraction form
    378,773.31/524,964.54 = 371,687.43/x
  3. Step 3: Cross multiply
    378,773.31x = 524,964.54 × 371,687.43
  4. Step 4: Simplify right side
    378,773.31x = 195,122,720,713.73
  5. Step 5: Solve for x
    x = 195,122,720,713.73/378,773.31
  6. Step 6: Final answer
    x = 515,143.80

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.