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Finding the Fourth Proportional to 275,077.72, 379,608.22 and 173,170.61

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Solution

The fourth proportional to 275,077.72, 379,608.22 and 173,170.61 is: 238,976.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,077.72 : 379,608.22 = 173,170.61 : x
  2. Step 2: Convert to fraction form
    275,077.72/379,608.22 = 173,170.61/x
  3. Step 3: Cross multiply
    275,077.72x = 379,608.22 × 173,170.61
  4. Step 4: Simplify right side
    275,077.72x = 65,736,986,760.37
  5. Step 5: Solve for x
    x = 65,736,986,760.37/275,077.72
  6. Step 6: Final answer
    x = 238,976.05

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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.