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Finding the Fourth Proportional to 485,879.55, 728,959.41 and 148,969.92

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Solution

The fourth proportional to 485,879.55, 728,959.41 and 148,969.92 is: 223,497.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,879.55 : 728,959.41 = 148,969.92 : x
  2. Step 2: Convert to fraction form
    485,879.55/728,959.41 = 148,969.92/x
  3. Step 3: Cross multiply
    485,879.55x = 728,959.41 × 148,969.92
  4. Step 4: Simplify right side
    485,879.55x = 108,593,024,990.95
  5. Step 5: Solve for x
    x = 108,593,024,990.95/485,879.55
  6. Step 6: Final answer
    x = 223,497.83

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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.