Home / 220,855.17-331,288.20-80,613.75

Finding the Fourth Proportional to 220,855.17, 331,288.20 and 80,613.75

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Solution

The fourth proportional to 220,855.17, 331,288.20 and 80,613.75 is: 120,922.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,855.17 : 331,288.20 = 80,613.75 : x
  2. Step 2: Convert to fraction form
    220,855.17/331,288.20 = 80,613.75/x
  3. Step 3: Cross multiply
    220,855.17x = 331,288.20 × 80,613.75
  4. Step 4: Simplify right side
    220,855.17x = 26,706,384,132.75
  5. Step 5: Solve for x
    x = 26,706,384,132.75/220,855.17
  6. Step 6: Final answer
    x = 120,922.61

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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.