Home / 498,207.10-747,435.82-143,221.76

Finding the Fourth Proportional to 498,207.10, 747,435.82 and 143,221.76

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Solution

The fourth proportional to 498,207.10, 747,435.82 and 143,221.76 is: 214,868.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,207.10 : 747,435.82 = 143,221.76 : x
  2. Step 2: Convert to fraction form
    498,207.10/747,435.82 = 143,221.76/x
  3. Step 3: Cross multiply
    498,207.10x = 747,435.82 × 143,221.76
  4. Step 4: Simplify right side
    498,207.10x = 107,049,073,627.44
  5. Step 5: Solve for x
    x = 107,049,073,627.44/498,207.10
  6. Step 6: Final answer
    x = 214,868.62

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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.