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Finding the Fourth Proportional to 275,508.56, 380,188.68 and 154,634.96

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Solution

The fourth proportional to 275,508.56, 380,188.68 and 154,634.96 is: 213,388.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,508.56 : 380,188.68 = 154,634.96 : x
  2. Step 2: Convert to fraction form
    275,508.56/380,188.68 = 154,634.96/x
  3. Step 3: Cross multiply
    275,508.56x = 380,188.68 × 154,634.96
  4. Step 4: Simplify right side
    275,508.56x = 58,790,461,324.25
  5. Step 5: Solve for x
    x = 58,790,461,324.25/275,508.56
  6. Step 6: Final answer
    x = 213,388.87

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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.