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Finding the Fourth Proportional to 485,142.48, 726,909.20 and 295,027.76

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Solution

The fourth proportional to 485,142.48, 726,909.20 and 295,027.76 is: 442,052.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,142.48 : 726,909.20 = 295,027.76 : x
  2. Step 2: Convert to fraction form
    485,142.48/726,909.20 = 295,027.76/x
  3. Step 3: Cross multiply
    485,142.48x = 726,909.20 × 295,027.76
  4. Step 4: Simplify right side
    485,142.48x = 214,458,392,999.39
  5. Step 5: Solve for x
    x = 214,458,392,999.39/485,142.48
  6. Step 6: Final answer
    x = 442,052.39

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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.