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Finding the Fourth Proportional to 268,170.89, 402,250.10 and 135,015.39

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Solution

The fourth proportional to 268,170.89, 402,250.10 and 135,015.39 is: 202,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,170.89 : 402,250.10 = 135,015.39 : x
  2. Step 2: Convert to fraction form
    268,170.89/402,250.10 = 135,015.39/x
  3. Step 3: Cross multiply
    268,170.89x = 402,250.10 × 135,015.39
  4. Step 4: Simplify right side
    268,170.89x = 54,309,954,129.04
  5. Step 5: Solve for x
    x = 54,309,954,129.04/268,170.89
  6. Step 6: Final answer
    x = 202,519.95

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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.