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Finding the Fourth Proportional to 485,446.12, 728,052.37 and 148,489.73

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Solution

The fourth proportional to 485,446.12, 728,052.37 and 148,489.73 is: 222,698.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,446.12 : 728,052.37 = 148,489.73 : x
  2. Step 2: Convert to fraction form
    485,446.12/728,052.37 = 148,489.73/x
  3. Step 3: Cross multiply
    485,446.12x = 728,052.37 × 148,489.73
  4. Step 4: Simplify right side
    485,446.12x = 108,108,301,296.07
  5. Step 5: Solve for x
    x = 108,108,301,296.07/485,446.12
  6. Step 6: Final answer
    x = 222,698.87

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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.