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Finding the Fourth Proportional to 396,796.59, 547,583.27 and 215,512.07

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Solution

The fourth proportional to 396,796.59, 547,583.27 and 215,512.07 is: 297,408.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,796.59 : 547,583.27 = 215,512.07 : x
  2. Step 2: Convert to fraction form
    396,796.59/547,583.27 = 215,512.07/x
  3. Step 3: Cross multiply
    396,796.59x = 547,583.27 × 215,512.07
  4. Step 4: Simplify right side
    396,796.59x = 118,010,800,199.59
  5. Step 5: Solve for x
    x = 118,010,800,199.59/396,796.59
  6. Step 6: Final answer
    x = 297,408.81

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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.