Home / 396,396.12-547,023.88-215,103.44

Finding the Fourth Proportional to 396,396.12, 547,023.88 and 215,103.44

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Solution

The fourth proportional to 396,396.12, 547,023.88 and 215,103.44 is: 296,841.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,396.12 : 547,023.88 = 215,103.44 : x
  2. Step 2: Convert to fraction form
    396,396.12/547,023.88 = 215,103.44/x
  3. Step 3: Cross multiply
    396,396.12x = 547,023.88 × 215,103.44
  4. Step 4: Simplify right side
    396,396.12x = 117,666,718,350.15
  5. Step 5: Solve for x
    x = 117,666,718,350.15/396,396.12
  6. Step 6: Final answer
    x = 296,841.25

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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.