Home / 218,650.25-328,020.75-92,291.55

Finding the Fourth Proportional to 218,650.25, 328,020.75 and 92,291.55

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Solution

The fourth proportional to 218,650.25, 328,020.75 and 92,291.55 is: 138,456.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,650.25 : 328,020.75 = 92,291.55 : x
  2. Step 2: Convert to fraction form
    218,650.25/328,020.75 = 92,291.55/x
  3. Step 3: Cross multiply
    218,650.25x = 328,020.75 × 92,291.55
  4. Step 4: Simplify right side
    218,650.25x = 30,273,543,449.66
  5. Step 5: Solve for x
    x = 30,273,543,449.66/218,650.25
  6. Step 6: Final answer
    x = 138,456.48

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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.