Home / 396,910.28-547,733.99-215,620.76

Finding the Fourth Proportional to 396,910.28, 547,733.99 and 215,620.76

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Solution

The fourth proportional to 396,910.28, 547,733.99 and 215,620.76 is: 297,555.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,910.28 : 547,733.99 = 215,620.76 : x
  2. Step 2: Convert to fraction form
    396,910.28/547,733.99 = 215,620.76/x
  3. Step 3: Cross multiply
    396,910.28x = 547,733.99 × 215,620.76
  4. Step 4: Simplify right side
    396,910.28x = 118,102,819,201.63
  5. Step 5: Solve for x
    x = 118,102,819,201.63/396,910.28
  6. Step 6: Final answer
    x = 297,555.46

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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.