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Finding the Fourth Proportional to 275,524.35, 380,223.41 and 154,665.87

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Solution

The fourth proportional to 275,524.35, 380,223.41 and 154,665.87 is: 213,438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,524.35 : 380,223.41 = 154,665.87 : x
  2. Step 2: Convert to fraction form
    275,524.35/380,223.41 = 154,665.87/x
  3. Step 3: Cross multiply
    275,524.35x = 380,223.41 × 154,665.87
  4. Step 4: Simplify right side
    275,524.35x = 58,807,584,502.02
  5. Step 5: Solve for x
    x = 58,807,584,502.02/275,524.35
  6. Step 6: Final answer
    x = 213,438.79

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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.