Home / 396,443.18-547,082.16-215,147.36

Finding the Fourth Proportional to 396,443.18, 547,082.16 and 215,147.36

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Solution

The fourth proportional to 396,443.18, 547,082.16 and 215,147.36 is: 296,898.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,443.18 : 547,082.16 = 215,147.36 : x
  2. Step 2: Convert to fraction form
    396,443.18/547,082.16 = 215,147.36/x
  3. Step 3: Cross multiply
    396,443.18x = 547,082.16 × 215,147.36
  4. Step 4: Simplify right side
    396,443.18x = 117,703,282,427.10
  5. Step 5: Solve for x
    x = 117,703,282,427.10/396,443.18
  6. Step 6: Final answer
    x = 296,898.24

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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.