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Finding the Fourth Proportional to 220,171.80, 330,387.30 and 79,944.60

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Solution

The fourth proportional to 220,171.80, 330,387.30 and 79,944.60 is: 119,963.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,171.80 : 330,387.30 = 79,944.60 : x
  2. Step 2: Convert to fraction form
    220,171.80/330,387.30 = 79,944.60/x
  3. Step 3: Cross multiply
    220,171.80x = 330,387.30 × 79,944.60
  4. Step 4: Simplify right side
    220,171.80x = 26,412,680,543.58
  5. Step 5: Solve for x
    x = 26,412,680,543.58/220,171.80
  6. Step 6: Final answer
    x = 119,963.96

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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.