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Finding the Fourth Proportional to 220,189.80, 330,414.30 and 79,930.20

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Solution

The fourth proportional to 220,189.80, 330,414.30 and 79,930.20 is: 119,942.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,189.80 : 330,414.30 = 79,930.20 : x
  2. Step 2: Convert to fraction form
    220,189.80/330,414.30 = 79,930.20/x
  3. Step 3: Cross multiply
    220,189.80x = 330,414.30 × 79,930.20
  4. Step 4: Simplify right side
    220,189.80x = 26,410,081,081.86
  5. Step 5: Solve for x
    x = 26,410,081,081.86/220,189.80
  6. Step 6: Final answer
    x = 119,942.35

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1.5x scale

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.