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Finding the Fourth Proportional to 252,086.67, 347,863.23 and 138,909.42

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Solution

The fourth proportional to 252,086.67, 347,863.23 and 138,909.42 is: 191,685.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,086.67 : 347,863.23 = 138,909.42 : x
  2. Step 2: Convert to fraction form
    252,086.67/347,863.23 = 138,909.42/x
  3. Step 3: Cross multiply
    252,086.67x = 347,863.23 × 138,909.42
  4. Step 4: Simplify right side
    252,086.67x = 48,321,479,518.63
  5. Step 5: Solve for x
    x = 48,321,479,518.63/252,086.67
  6. Step 6: Final answer
    x = 191,685.98

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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.