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Finding the Fourth Proportional to 171,198.50, 256,914.39 and 60,390.50

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Solution

The fourth proportional to 171,198.50, 256,914.39 and 60,390.50 is: 90,626.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,198.50 : 256,914.39 = 60,390.50 : x
  2. Step 2: Convert to fraction form
    171,198.50/256,914.39 = 60,390.50/x
  3. Step 3: Cross multiply
    171,198.50x = 256,914.39 × 60,390.50
  4. Step 4: Simplify right side
    171,198.50x = 15,515,188,469.30
  5. Step 5: Solve for x
    x = 15,515,188,469.30/171,198.50
  6. Step 6: Final answer
    x = 90,626.89

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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.