Home / 396,517.11-547,205.08-215,240.52

Finding the Fourth Proportional to 396,517.11, 547,205.08 and 215,240.52

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Solution

The fourth proportional to 396,517.11, 547,205.08 and 215,240.52 is: 297,038.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,517.11 : 547,205.08 = 215,240.52 : x
  2. Step 2: Convert to fraction form
    396,517.11/547,205.08 = 215,240.52/x
  3. Step 3: Cross multiply
    396,517.11x = 547,205.08 × 215,240.52
  4. Step 4: Simplify right side
    396,517.11x = 117,780,709,444.18
  5. Step 5: Solve for x
    x = 117,780,709,444.18/396,517.11
  6. Step 6: Final answer
    x = 297,038.15

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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.