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Finding the Fourth Proportional to 239,887.81, 331,046.57 and 132,455.81

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Solution

The fourth proportional to 239,887.81, 331,046.57 and 132,455.81 is: 182,789.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,887.81 : 331,046.57 = 132,455.81 : x
  2. Step 2: Convert to fraction form
    239,887.81/331,046.57 = 132,455.81/x
  3. Step 3: Cross multiply
    239,887.81x = 331,046.57 × 132,455.81
  4. Step 4: Simplify right side
    239,887.81x = 43,849,040,252.98
  5. Step 5: Solve for x
    x = 43,849,040,252.98/239,887.81
  6. Step 6: Final answer
    x = 182,789.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.