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Finding the Fourth Proportional to 275,401.10, 380,049.95 and 154,544.78

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Solution

The fourth proportional to 275,401.10, 380,049.95 and 154,544.78 is: 213,269.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,401.10 : 380,049.95 = 154,544.78 : x
  2. Step 2: Convert to fraction form
    275,401.10/380,049.95 = 154,544.78/x
  3. Step 3: Cross multiply
    275,401.10x = 380,049.95 × 154,544.78
  4. Step 4: Simplify right side
    275,401.10x = 58,734,733,238.79
  5. Step 5: Solve for x
    x = 58,734,733,238.79/275,401.10
  6. Step 6: Final answer
    x = 213,269.79

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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.