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Finding the Fourth Proportional to 396,797.72, 547,584.81 and 215,513.19

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Solution

The fourth proportional to 396,797.72, 547,584.81 and 215,513.19 is: 297,410.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,797.72 : 547,584.81 = 215,513.19 : x
  2. Step 2: Convert to fraction form
    396,797.72/547,584.81 = 215,513.19/x
  3. Step 3: Cross multiply
    396,797.72x = 547,584.81 × 215,513.19
  4. Step 4: Simplify right side
    396,797.72x = 118,011,749,198.64
  5. Step 5: Solve for x
    x = 118,011,749,198.64/396,797.72
  6. Step 6: Final answer
    x = 297,410.35

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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.