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Finding the Fourth Proportional to 442,991.73, 664,552.80 and 143,372.73

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Solution

The fourth proportional to 442,991.73, 664,552.80 and 143,372.73 is: 215,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,991.73 : 664,552.80 = 143,372.73 : x
  2. Step 2: Convert to fraction form
    442,991.73/664,552.80 = 143,372.73/x
  3. Step 3: Cross multiply
    442,991.73x = 664,552.80 × 143,372.73
  4. Step 4: Simplify right side
    442,991.73x = 95,278,749,165.14
  5. Step 5: Solve for x
    x = 95,278,749,165.14/442,991.73
  6. Step 6: Final answer
    x = 215,080.20

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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.