Home / 218,624.20-328,082.10-100,234.60

Finding the Fourth Proportional to 218,624.20, 328,082.10 and 100,234.60

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Solution

The fourth proportional to 218,624.20, 328,082.10 and 100,234.60 is: 150,418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,624.20 : 328,082.10 = 100,234.60 : x
  2. Step 2: Convert to fraction form
    218,624.20/328,082.10 = 100,234.60/x
  3. Step 3: Cross multiply
    218,624.20x = 328,082.10 × 100,234.60
  4. Step 4: Simplify right side
    218,624.20x = 32,885,178,060.66
  5. Step 5: Solve for x
    x = 32,885,178,060.66/218,624.20
  6. Step 6: Final answer
    x = 150,418.75

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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.