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Finding the Fourth Proportional to 485,568.92, 728,326.58 and 148,609.32

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Solution

The fourth proportional to 485,568.92, 728,326.58 and 148,609.32 is: 222,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,568.92 : 728,326.58 = 148,609.32 : x
  2. Step 2: Convert to fraction form
    485,568.92/728,326.58 = 148,609.32/x
  3. Step 3: Cross multiply
    485,568.92x = 728,326.58 × 148,609.32
  4. Step 4: Simplify right side
    485,568.92x = 108,236,117,791.73
  5. Step 5: Solve for x
    x = 108,236,117,791.73/485,568.92
  6. Step 6: Final answer
    x = 222,905.78

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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.