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Finding the Fourth Proportional to 221,279.52, 331,921.56 and 55,067.52

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Solution

The fourth proportional to 221,279.52, 331,921.56 and 55,067.52 is: 82,601.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,279.52 : 331,921.56 = 55,067.52 : x
  2. Step 2: Convert to fraction form
    221,279.52/331,921.56 = 55,067.52/x
  3. Step 3: Cross multiply
    221,279.52x = 331,921.56 × 55,067.52
  4. Step 4: Simplify right side
    221,279.52x = 18,278,097,143.73
  5. Step 5: Solve for x
    x = 18,278,097,143.73/221,279.52
  6. Step 6: Final answer
    x = 82,601.85

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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.