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Finding the Fourth Proportional to 220,800.20, 331,200.30 and 80,540.60

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Solution

The fourth proportional to 220,800.20, 331,200.30 and 80,540.60 is: 120,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,800.20 : 331,200.30 = 80,540.60 : x
  2. Step 2: Convert to fraction form
    220,800.20/331,200.30 = 80,540.60/x
  3. Step 3: Cross multiply
    220,800.20x = 331,200.30 × 80,540.60
  4. Step 4: Simplify right side
    220,800.20x = 26,675,070,882.18
  5. Step 5: Solve for x
    x = 26,675,070,882.18/220,800.20
  6. Step 6: Final answer
    x = 120,810.90

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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.