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Finding the Fourth Proportional to 252,062.85, 347,842.85 and 138,889.65

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Solution

The fourth proportional to 252,062.85, 347,842.85 and 138,889.65 is: 191,665.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,062.85 : 347,842.85 = 138,889.65 : x
  2. Step 2: Convert to fraction form
    252,062.85/347,842.85 = 138,889.65/x
  3. Step 3: Cross multiply
    252,062.85x = 347,842.85 × 138,889.65
  4. Step 4: Simplify right side
    252,062.85x = 48,311,770,997.05
  5. Step 5: Solve for x
    x = 48,311,770,997.05/252,062.85
  6. Step 6: Final answer
    x = 191,665.57

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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.