Home / 278,111.38-416,919.66-100,578.92

Finding the Fourth Proportional to 278,111.38, 416,919.66 and 100,578.92

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Solution

The fourth proportional to 278,111.38, 416,919.66 and 100,578.92 is: 150,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,111.38 : 416,919.66 = 100,578.92 : x
  2. Step 2: Convert to fraction form
    278,111.38/416,919.66 = 100,578.92/x
  3. Step 3: Cross multiply
    278,111.38x = 416,919.66 × 100,578.92
  4. Step 4: Simplify right side
    278,111.38x = 41,933,329,129.57
  5. Step 5: Solve for x
    x = 41,933,329,129.57/278,111.38
  6. Step 6: Final answer
    x = 150,778.90

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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.