Home / 396,500.55-547,171.31-215,212.52

Finding the Fourth Proportional to 396,500.55, 547,171.31 and 215,212.52

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Solution

The fourth proportional to 396,500.55, 547,171.31 and 215,212.52 is: 296,993.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,500.55 : 547,171.31 = 215,212.52 : x
  2. Step 2: Convert to fraction form
    396,500.55/547,171.31 = 215,212.52/x
  3. Step 3: Cross multiply
    396,500.55x = 547,171.31 × 215,212.52
  4. Step 4: Simplify right side
    396,500.55x = 117,758,112,684.88
  5. Step 5: Solve for x
    x = 117,758,112,684.88/396,500.55
  6. Step 6: Final answer
    x = 296,993.57

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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.