Home / 396,396.16-547,023.84-215,103.52

Finding the Fourth Proportional to 396,396.16, 547,023.84 and 215,103.52

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Solution

The fourth proportional to 396,396.16, 547,023.84 and 215,103.52 is: 296,841.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,396.16 : 547,023.84 = 215,103.52 : x
  2. Step 2: Convert to fraction form
    396,396.16/547,023.84 = 215,103.52/x
  3. Step 3: Cross multiply
    396,396.16x = 547,023.84 × 215,103.52
  4. Step 4: Simplify right side
    396,396.16x = 117,666,753,507.92
  5. Step 5: Solve for x
    x = 117,666,753,507.92/396,396.16
  6. Step 6: Final answer
    x = 296,841.31

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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.