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Finding the Fourth Proportional to 274,159.28, 411,234.60 and 87,168.08

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Solution

The fourth proportional to 274,159.28, 411,234.60 and 87,168.08 is: 130,750.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,159.28 : 411,234.60 = 87,168.08 : x
  2. Step 2: Convert to fraction form
    274,159.28/411,234.60 = 87,168.08/x
  3. Step 3: Cross multiply
    274,159.28x = 411,234.60 × 87,168.08
  4. Step 4: Simplify right side
    274,159.28x = 35,846,530,511.57
  5. Step 5: Solve for x
    x = 35,846,530,511.57/274,159.28
  6. Step 6: Final answer
    x = 130,750.75

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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.