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Finding the Fourth Proportional to 396,891.09, 547,713.50 and 215,604.38

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Solution

The fourth proportional to 396,891.09, 547,713.50 and 215,604.38 is: 297,536.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,891.09 : 547,713.50 = 215,604.38 : x
  2. Step 2: Convert to fraction form
    396,891.09/547,713.50 = 215,604.38/x
  3. Step 3: Cross multiply
    396,891.09x = 547,713.50 × 215,604.38
  4. Step 4: Simplify right side
    396,891.09x = 118,089,429,876.39
  5. Step 5: Solve for x
    x = 118,089,429,876.39/396,891.09
  6. Step 6: Final answer
    x = 297,536.11

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1.5x scale

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.