Home / 396,513.05-547,173.38-215,221.15

Finding the Fourth Proportional to 396,513.05, 547,173.38 and 215,221.15

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Solution

The fourth proportional to 396,513.05, 547,173.38 and 215,221.15 is: 296,997.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,513.05 : 547,173.38 = 215,221.15 : x
  2. Step 2: Convert to fraction form
    396,513.05/547,173.38 = 215,221.15/x
  3. Step 3: Cross multiply
    396,513.05x = 547,173.38 × 215,221.15
  4. Step 4: Simplify right side
    396,513.05x = 117,763,280,281.01
  5. Step 5: Solve for x
    x = 117,763,280,281.01/396,513.05
  6. Step 6: Final answer
    x = 296,997.24

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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.