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Finding the Fourth Proportional to 485,508.28, 728,349.92 and 148,542.60

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Solution

The fourth proportional to 485,508.28, 728,349.92 and 148,542.60 is: 222,840.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,508.28 : 728,349.92 = 148,542.60 : x
  2. Step 2: Convert to fraction form
    485,508.28/728,349.92 = 148,542.60/x
  3. Step 3: Cross multiply
    485,508.28x = 728,349.92 × 148,542.60
  4. Step 4: Simplify right side
    485,508.28x = 108,190,990,826.59
  5. Step 5: Solve for x
    x = 108,190,990,826.59/485,508.28
  6. Step 6: Final answer
    x = 222,840.67

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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.