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Finding the Fourth Proportional to 396,802.42, 547,593.89 and 215,514.49

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Solution

The fourth proportional to 396,802.42, 547,593.89 and 215,514.49 is: 297,413.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,802.42 : 547,593.89 = 215,514.49 : x
  2. Step 2: Convert to fraction form
    396,802.42/547,593.89 = 215,514.49/x
  3. Step 3: Cross multiply
    396,802.42x = 547,593.89 × 215,514.49
  4. Step 4: Simplify right side
    396,802.42x = 118,014,417,930.47
  5. Step 5: Solve for x
    x = 118,014,417,930.47/396,802.42
  6. Step 6: Final answer
    x = 297,413.55

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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.