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Finding the Fourth Proportional to 485,439.10, 728,482.56 and 169,896.04

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Solution

The fourth proportional to 485,439.10, 728,482.56 and 169,896.04 is: 254,957.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,439.10 : 728,482.56 = 169,896.04 : x
  2. Step 2: Convert to fraction form
    485,439.10/728,482.56 = 169,896.04/x
  3. Step 3: Cross multiply
    485,439.10x = 728,482.56 × 169,896.04
  4. Step 4: Simplify right side
    485,439.10x = 123,766,302,153.06
  5. Step 5: Solve for x
    x = 123,766,302,153.06/485,439.10
  6. Step 6: Final answer
    x = 254,957.42

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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.