Home / 295,072.20-442,608.30-81,839.70

Finding the Fourth Proportional to 295,072.20, 442,608.30 and 81,839.70

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Solution

The fourth proportional to 295,072.20, 442,608.30 and 81,839.70 is: 122,759.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,072.20 : 442,608.30 = 81,839.70 : x
  2. Step 2: Convert to fraction form
    295,072.20/442,608.30 = 81,839.70/x
  3. Step 3: Cross multiply
    295,072.20x = 442,608.30 × 81,839.70
  4. Step 4: Simplify right side
    295,072.20x = 36,222,930,489.51
  5. Step 5: Solve for x
    x = 36,222,930,489.51/295,072.20
  6. Step 6: Final answer
    x = 122,759.55

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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.