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Finding the Fourth Proportional to 220,747.80, 331,127.78 and 80,610.84

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Solution

The fourth proportional to 220,747.80, 331,127.78 and 80,610.84 is: 120,918.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,747.80 : 331,127.78 = 80,610.84 : x
  2. Step 2: Convert to fraction form
    220,747.80/331,127.78 = 80,610.84/x
  3. Step 3: Cross multiply
    220,747.80x = 331,127.78 × 80,610.84
  4. Step 4: Simplify right side
    220,747.80x = 26,692,488,493.14
  5. Step 5: Solve for x
    x = 26,692,488,493.14/220,747.80
  6. Step 6: Final answer
    x = 120,918.48

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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.