Home / 278,899.76-418,379.39-89,292.33

Finding the Fourth Proportional to 278,899.76, 418,379.39 and 89,292.33

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Solution

The fourth proportional to 278,899.76, 418,379.39 and 89,292.33 is: 133,948.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,899.76 : 418,379.39 = 89,292.33 : x
  2. Step 2: Convert to fraction form
    278,899.76/418,379.39 = 89,292.33/x
  3. Step 3: Cross multiply
    278,899.76x = 418,379.39 × 89,292.33
  4. Step 4: Simplify right side
    278,899.76x = 37,358,070,110.62
  5. Step 5: Solve for x
    x = 37,358,070,110.62/278,899.76
  6. Step 6: Final answer
    x = 133,948.02

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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.