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Finding the Fourth Proportional to 485,760.66, 728,001.27 and 272,524.50

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Solution

The fourth proportional to 485,760.66, 728,001.27 and 272,524.50 is: 408,427.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,760.66 : 728,001.27 = 272,524.50 : x
  2. Step 2: Convert to fraction form
    485,760.66/728,001.27 = 272,524.50/x
  3. Step 3: Cross multiply
    485,760.66x = 728,001.27 × 272,524.50
  4. Step 4: Simplify right side
    485,760.66x = 198,398,182,106.12
  5. Step 5: Solve for x
    x = 198,398,182,106.12/485,760.66
  6. Step 6: Final answer
    x = 408,427.85

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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.