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Finding the Fourth Proportional to 394,251.75, 544,067.43 and 215,403.75

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Solution

The fourth proportional to 394,251.75, 544,067.43 and 215,403.75 is: 297,257.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,251.75 : 544,067.43 = 215,403.75 : x
  2. Step 2: Convert to fraction form
    394,251.75/544,067.43 = 215,403.75/x
  3. Step 3: Cross multiply
    394,251.75x = 544,067.43 × 215,403.75
  4. Step 4: Simplify right side
    394,251.75x = 117,194,164,674.86
  5. Step 5: Solve for x
    x = 117,194,164,674.86/394,251.75
  6. Step 6: Final answer
    x = 297,257.18

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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.