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Finding the Fourth Proportional to 396,219.96, 546,781.73 and 214,931.97

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Solution

The fourth proportional to 396,219.96, 546,781.73 and 214,931.97 is: 296,605.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,219.96 : 546,781.73 = 214,931.97 : x
  2. Step 2: Convert to fraction form
    396,219.96/546,781.73 = 214,931.97/x
  3. Step 3: Cross multiply
    396,219.96x = 546,781.73 × 214,931.97
  4. Step 4: Simplify right side
    396,219.96x = 117,520,873,314.25
  5. Step 5: Solve for x
    x = 117,520,873,314.25/396,219.96
  6. Step 6: Final answer
    x = 296,605.13

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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.