Home / 396,500.54-547,156.08-215,208.59

Finding the Fourth Proportional to 396,500.54, 547,156.08 and 215,208.59

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Solution

The fourth proportional to 396,500.54, 547,156.08 and 215,208.59 is: 296,979.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,500.54 : 547,156.08 = 215,208.59 : x
  2. Step 2: Convert to fraction form
    396,500.54/547,156.08 = 215,208.59/x
  3. Step 3: Cross multiply
    396,500.54x = 547,156.08 × 215,208.59
  4. Step 4: Simplify right side
    396,500.54x = 117,752,685,750.95
  5. Step 5: Solve for x
    x = 117,752,685,750.95/396,500.54
  6. Step 6: Final answer
    x = 296,979.89

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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.