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Finding the Fourth Proportional to 396,796.22, 547,582.74 and 215,511.69

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Solution

The fourth proportional to 396,796.22, 547,582.74 and 215,511.69 is: 297,408.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,796.22 : 547,582.74 = 215,511.69 : x
  2. Step 2: Convert to fraction form
    396,796.22/547,582.74 = 215,511.69/x
  3. Step 3: Cross multiply
    396,796.22x = 547,582.74 × 215,511.69
  4. Step 4: Simplify right side
    396,796.22x = 118,010,481,712.23
  5. Step 5: Solve for x
    x = 118,010,481,712.23/396,796.22
  6. Step 6: Final answer
    x = 297,408.28

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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.