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Finding the Fourth Proportional to 252,081, 347,879.10 and 138,911.04

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Solution

The fourth proportional to 252,081, 347,879.10 and 138,911.04 is: 191,701.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,081 : 347,879.10 = 138,911.04 : x
  2. Step 2: Convert to fraction form
    252,081/347,879.10 = 138,911.04/x
  3. Step 3: Cross multiply
    252,081x = 347,879.10 × 138,911.04
  4. Step 4: Simplify right side
    252,081x = 48,324,247,575.26
  5. Step 5: Solve for x
    x = 48,324,247,575.26/252,081
  6. Step 6: Final answer
    x = 191,701.27

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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.