Home / 278,742.38-418,256.57-136,584.98

Finding the Fourth Proportional to 278,742.38, 418,256.57 and 136,584.98

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Solution

The fourth proportional to 278,742.38, 418,256.57 and 136,584.98 is: 204,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,742.38 : 418,256.57 = 136,584.98 : x
  2. Step 2: Convert to fraction form
    278,742.38/418,256.57 = 136,584.98/x
  3. Step 3: Cross multiply
    278,742.38x = 418,256.57 × 136,584.98
  4. Step 4: Simplify right side
    278,742.38x = 57,127,567,611.73
  5. Step 5: Solve for x
    x = 57,127,567,611.73/278,742.38
  6. Step 6: Final answer
    x = 204,947.55

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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.