Home / 220,826.20-331,244.70-80,584.78

Finding the Fourth Proportional to 220,826.20, 331,244.70 and 80,584.78

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Solution

The fourth proportional to 220,826.20, 331,244.70 and 80,584.78 is: 120,879.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,826.20 : 331,244.70 = 80,584.78 : x
  2. Step 2: Convert to fraction form
    220,826.20/331,244.70 = 80,584.78/x
  3. Step 3: Cross multiply
    220,826.20x = 331,244.70 × 80,584.78
  4. Step 4: Simplify right side
    220,826.20x = 26,693,281,275.67
  5. Step 5: Solve for x
    x = 26,693,281,275.67/220,826.20
  6. Step 6: Final answer
    x = 120,879.14

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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.