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Finding the Fourth Proportional to 485,375.18, 728,390.55 and 169,834.82

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Solution

The fourth proportional to 485,375.18, 728,390.55 and 169,834.82 is: 254,866.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,375.18 : 728,390.55 = 169,834.82 : x
  2. Step 2: Convert to fraction form
    485,375.18/728,390.55 = 169,834.82/x
  3. Step 3: Cross multiply
    485,375.18x = 728,390.55 × 169,834.82
  4. Step 4: Simplify right side
    485,375.18x = 123,706,077,948.95
  5. Step 5: Solve for x
    x = 123,706,077,948.95/485,375.18
  6. Step 6: Final answer
    x = 254,866.92

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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.