Home / 396,440.82-547,088.61-215,152.70

Finding the Fourth Proportional to 396,440.82, 547,088.61 and 215,152.70

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Solution

The fourth proportional to 396,440.82, 547,088.61 and 215,152.70 is: 296,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,440.82 : 547,088.61 = 215,152.70 : x
  2. Step 2: Convert to fraction form
    396,440.82/547,088.61 = 215,152.70/x
  3. Step 3: Cross multiply
    396,440.82x = 547,088.61 × 215,152.70
  4. Step 4: Simplify right side
    396,440.82x = 117,707,588,845.30
  5. Step 5: Solve for x
    x = 117,707,588,845.30/396,440.82
  6. Step 6: Final answer
    x = 296,910.87

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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.