Home / 396,497.10-547,151.34-215,205.12

Finding the Fourth Proportional to 396,497.10, 547,151.34 and 215,205.12

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Solution

The fourth proportional to 396,497.10, 547,151.34 and 215,205.12 is: 296,975.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,497.10 : 547,151.34 = 215,205.12 : x
  2. Step 2: Convert to fraction form
    396,497.10/547,151.34 = 215,205.12/x
  3. Step 3: Cross multiply
    396,497.10x = 547,151.34 × 215,205.12
  4. Step 4: Simplify right side
    396,497.10x = 117,749,769,782.86
  5. Step 5: Solve for x
    x = 117,749,769,782.86/396,497.10
  6. Step 6: Final answer
    x = 296,975.11

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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.