Home / 396,543.14-547,235.21-215,255.42

Finding the Fourth Proportional to 396,543.14, 547,235.21 and 215,255.42

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Solution

The fourth proportional to 396,543.14, 547,235.21 and 215,255.42 is: 297,055.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,543.14 : 547,235.21 = 215,255.42 : x
  2. Step 2: Convert to fraction form
    396,543.14/547,235.21 = 215,255.42/x
  3. Step 3: Cross multiply
    396,543.14x = 547,235.21 × 215,255.42
  4. Step 4: Simplify right side
    396,543.14x = 117,795,342,769.30
  5. Step 5: Solve for x
    x = 117,795,342,769.30/396,543.14
  6. Step 6: Final answer
    x = 297,055.56

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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.