Home / 442,945.53-664,515.18-143,456.39

Finding the Fourth Proportional to 442,945.53, 664,515.18 and 143,456.39

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Solution

The fourth proportional to 442,945.53, 664,515.18 and 143,456.39 is: 215,215.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,945.53 : 664,515.18 = 143,456.39 : x
  2. Step 2: Convert to fraction form
    442,945.53/664,515.18 = 143,456.39/x
  3. Step 3: Cross multiply
    442,945.53x = 664,515.18 × 143,456.39
  4. Step 4: Simplify right side
    442,945.53x = 95,328,945,500.42
  5. Step 5: Solve for x
    x = 95,328,945,500.42/442,945.53
  6. Step 6: Final answer
    x = 215,215.96

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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.