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Finding the Fourth Proportional to 485,382.58, 728,401.92 and 169,842.22

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Solution

The fourth proportional to 485,382.58, 728,401.92 and 169,842.22 is: 254,878.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,382.58 : 728,401.92 = 169,842.22 : x
  2. Step 2: Convert to fraction form
    485,382.58/728,401.92 = 169,842.22/x
  3. Step 3: Cross multiply
    485,382.58x = 728,401.92 × 169,842.22
  4. Step 4: Simplify right side
    485,382.58x = 123,713,396,687.15
  5. Step 5: Solve for x
    x = 123,713,396,687.15/485,382.58
  6. Step 6: Final answer
    x = 254,878.12

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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.