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Finding the Fourth Proportional to 485,398.60, 728,425.92 and 169,858.24

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Solution

The fourth proportional to 485,398.60, 728,425.92 and 169,858.24 is: 254,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,398.60 : 728,425.92 = 169,858.24 : x
  2. Step 2: Convert to fraction form
    485,398.60/728,425.92 = 169,858.24/x
  3. Step 3: Cross multiply
    485,398.60x = 728,425.92 × 169,858.24
  4. Step 4: Simplify right side
    485,398.60x = 123,729,144,741.58
  5. Step 5: Solve for x
    x = 123,729,144,741.58/485,398.60
  6. Step 6: Final answer
    x = 254,902.15

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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.