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Finding the Fourth Proportional to 275,761.44, 380,589.12 and 154,911.96

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Solution

The fourth proportional to 275,761.44, 380,589.12 and 154,911.96 is: 213,800.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,761.44 : 380,589.12 = 154,911.96 : x
  2. Step 2: Convert to fraction form
    275,761.44/380,589.12 = 154,911.96/x
  3. Step 3: Cross multiply
    275,761.44x = 380,589.12 × 154,911.96
  4. Step 4: Simplify right side
    275,761.44x = 58,957,806,533.88
  5. Step 5: Solve for x
    x = 58,957,806,533.88/275,761.44
  6. Step 6: Final answer
    x = 213,800.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.