Home / 396,512.21-547,184.89-215,222.67

Finding the Fourth Proportional to 396,512.21, 547,184.89 and 215,222.67

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Solution

The fourth proportional to 396,512.21, 547,184.89 and 215,222.67 is: 297,006.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,512.21 : 547,184.89 = 215,222.67 : x
  2. Step 2: Convert to fraction form
    396,512.21/547,184.89 = 215,222.67/x
  3. Step 3: Cross multiply
    396,512.21x = 547,184.89 × 215,222.67
  4. Step 4: Simplify right side
    396,512.21x = 117,766,593,883.80
  5. Step 5: Solve for x
    x = 117,766,593,883.80/396,512.21
  6. Step 6: Final answer
    x = 297,006.22

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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.