Home / 396,493.05-547,161.03-215,204.98

Finding the Fourth Proportional to 396,493.05, 547,161.03 and 215,204.98

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Solution

The fourth proportional to 396,493.05, 547,161.03 and 215,204.98 is: 296,983.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,493.05 : 547,161.03 = 215,204.98 : x
  2. Step 2: Convert to fraction form
    396,493.05/547,161.03 = 215,204.98/x
  3. Step 3: Cross multiply
    396,493.05x = 547,161.03 × 215,204.98
  4. Step 4: Simplify right side
    396,493.05x = 117,751,778,517.93
  5. Step 5: Solve for x
    x = 117,751,778,517.93/396,493.05
  6. Step 6: Final answer
    x = 296,983.21

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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.