Home / 445,180.28-667,425.30-220,385.72

Finding the Fourth Proportional to 445,180.28, 667,425.30 and 220,385.72

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Solution

The fourth proportional to 445,180.28, 667,425.30 and 220,385.72 is: 330,407.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,180.28 : 667,425.30 = 220,385.72 : x
  2. Step 2: Convert to fraction form
    445,180.28/667,425.30 = 220,385.72/x
  3. Step 3: Cross multiply
    445,180.28x = 667,425.30 × 220,385.72
  4. Step 4: Simplify right side
    445,180.28x = 147,091,005,286.72
  5. Step 5: Solve for x
    x = 147,091,005,286.72/445,180.28
  6. Step 6: Final answer
    x = 330,407.73

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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.