Home / 220,823.20-331,240.20-80,581.78

Finding the Fourth Proportional to 220,823.20, 331,240.20 and 80,581.78

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Solution

The fourth proportional to 220,823.20, 331,240.20 and 80,581.78 is: 120,874.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,823.20 : 331,240.20 = 80,581.78 : x
  2. Step 2: Convert to fraction form
    220,823.20/331,240.20 = 80,581.78/x
  3. Step 3: Cross multiply
    220,823.20x = 331,240.20 × 80,581.78
  4. Step 4: Simplify right side
    220,823.20x = 26,691,924,923.56
  5. Step 5: Solve for x
    x = 26,691,924,923.56/220,823.20
  6. Step 6: Final answer
    x = 120,874.64

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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.