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Finding the Fourth Proportional to 485,115.30, 727,672.95 and 169,539.30

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Solution

The fourth proportional to 485,115.30, 727,672.95 and 169,539.30 is: 254,308.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,115.30 : 727,672.95 = 169,539.30 : x
  2. Step 2: Convert to fraction form
    485,115.30/727,672.95 = 169,539.30/x
  3. Step 3: Cross multiply
    485,115.30x = 727,672.95 × 169,539.30
  4. Step 4: Simplify right side
    485,115.30x = 123,369,162,571.94
  5. Step 5: Solve for x
    x = 123,369,162,571.94/485,115.30
  6. Step 6: Final answer
    x = 254,308.95

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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.