Home / 220,819.67-331,234.95-80,578.25

Finding the Fourth Proportional to 220,819.67, 331,234.95 and 80,578.25

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Solution

The fourth proportional to 220,819.67, 331,234.95 and 80,578.25 is: 120,869.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,819.67 : 331,234.95 = 80,578.25 : x
  2. Step 2: Convert to fraction form
    220,819.67/331,234.95 = 80,578.25/x
  3. Step 3: Cross multiply
    220,819.67x = 331,234.95 × 80,578.25
  4. Step 4: Simplify right side
    220,819.67x = 26,690,332,609.84
  5. Step 5: Solve for x
    x = 26,690,332,609.84/220,819.67
  6. Step 6: Final answer
    x = 120,869.36

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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.