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Finding the Fourth Proportional to 220,995.52, 331,591.62 and 115,789.88

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Solution

The fourth proportional to 220,995.52, 331,591.62 and 115,789.88 is: 173,736.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,995.52 : 331,591.62 = 115,789.88 : x
  2. Step 2: Convert to fraction form
    220,995.52/331,591.62 = 115,789.88/x
  3. Step 3: Cross multiply
    220,995.52x = 331,591.62 × 115,789.88
  4. Step 4: Simplify right side
    220,995.52x = 38,394,953,888.81
  5. Step 5: Solve for x
    x = 38,394,953,888.81/220,995.52
  6. Step 6: Final answer
    x = 173,736.34

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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.