Home / 396,436.28-547,082.40-215,148.22

Finding the Fourth Proportional to 396,436.28, 547,082.40 and 215,148.22

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Solution

The fourth proportional to 396,436.28, 547,082.40 and 215,148.22 is: 296,904.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,436.28 : 547,082.40 = 215,148.22 : x
  2. Step 2: Convert to fraction form
    396,436.28/547,082.40 = 215,148.22/x
  3. Step 3: Cross multiply
    396,436.28x = 547,082.40 × 215,148.22
  4. Step 4: Simplify right side
    396,436.28x = 117,703,804,553.33
  5. Step 5: Solve for x
    x = 117,703,804,553.33/396,436.28
  6. Step 6: Final answer
    x = 296,904.72

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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.