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Finding the Fourth Proportional to 221,759.88, 332,672.68 and 81,507.56

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Solution

The fourth proportional to 221,759.88, 332,672.68 and 81,507.56 is: 122,273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,759.88 : 332,672.68 = 81,507.56 : x
  2. Step 2: Convert to fraction form
    221,759.88/332,672.68 = 81,507.56/x
  3. Step 3: Cross multiply
    221,759.88x = 332,672.68 × 81,507.56
  4. Step 4: Simplify right side
    221,759.88x = 27,115,338,425.46
  5. Step 5: Solve for x
    x = 27,115,338,425.46/221,759.88
  6. Step 6: Final answer
    x = 122,273.42

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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.