Home / 485,375.80-728,391.77-169,835.44

Finding the Fourth Proportional to 485,375.80, 728,391.77 and 169,835.44

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Solution

The fourth proportional to 485,375.80, 728,391.77 and 169,835.44 is: 254,867.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,375.80 : 728,391.77 = 169,835.44 : x
  2. Step 2: Convert to fraction form
    485,375.80/728,391.77 = 169,835.44/x
  3. Step 3: Cross multiply
    485,375.80x = 728,391.77 × 169,835.44
  4. Step 4: Simplify right side
    485,375.80x = 123,706,736,750.33
  5. Step 5: Solve for x
    x = 123,706,736,750.33/485,375.80
  6. Step 6: Final answer
    x = 254,867.95

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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.