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Finding the Fourth Proportional to 235,719.78, 353,525.67 and 67,236.90

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Solution

The fourth proportional to 235,719.78, 353,525.67 and 67,236.90 is: 100,839.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,719.78 : 353,525.67 = 67,236.90 : x
  2. Step 2: Convert to fraction form
    235,719.78/353,525.67 = 67,236.90/x
  3. Step 3: Cross multiply
    235,719.78x = 353,525.67 × 67,236.90
  4. Step 4: Simplify right side
    235,719.78x = 23,769,970,121.22
  5. Step 5: Solve for x
    x = 23,769,970,121.22/235,719.78
  6. Step 6: Final answer
    x = 100,839.95

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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.