Home / 220,729.91-331,144.23-80,488.54

Finding the Fourth Proportional to 220,729.91, 331,144.23 and 80,488.54

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Solution

The fourth proportional to 220,729.91, 331,144.23 and 80,488.54 is: 120,750.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,729.91 : 331,144.23 = 80,488.54 : x
  2. Step 2: Convert to fraction form
    220,729.91/331,144.23 = 80,488.54/x
  3. Step 3: Cross multiply
    220,729.91x = 331,144.23 × 80,488.54
  4. Step 4: Simplify right side
    220,729.91x = 26,653,313,543.96
  5. Step 5: Solve for x
    x = 26,653,313,543.96/220,729.91
  6. Step 6: Final answer
    x = 120,750.80

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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.