Home / 396,427.15-547,069.85-215,139.12

Finding the Fourth Proportional to 396,427.15, 547,069.85 and 215,139.12

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Solution

The fourth proportional to 396,427.15, 547,069.85 and 215,139.12 is: 296,892.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,427.15 : 547,069.85 = 215,139.12 : x
  2. Step 2: Convert to fraction form
    396,427.15/547,069.85 = 215,139.12/x
  3. Step 3: Cross multiply
    396,427.15x = 547,069.85 × 215,139.12
  4. Step 4: Simplify right side
    396,427.15x = 117,696,122,296.49
  5. Step 5: Solve for x
    x = 117,696,122,296.49/396,427.15
  6. Step 6: Final answer
    x = 296,892.18

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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.