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Finding the Fourth Proportional to 485,528.88, 728,380.56 and 148,563.12

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Solution

The fourth proportional to 485,528.88, 728,380.56 and 148,563.12 is: 222,871.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,528.88 : 728,380.56 = 148,563.12 : x
  2. Step 2: Convert to fraction form
    485,528.88/728,380.56 = 148,563.12/x
  3. Step 3: Cross multiply
    485,528.88x = 728,380.56 × 148,563.12
  4. Step 4: Simplify right side
    485,528.88x = 108,210,488,540.95
  5. Step 5: Solve for x
    x = 108,210,488,540.95/485,528.88
  6. Step 6: Final answer
    x = 222,871.37

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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.