Home / 396,408.45-547,044.01-215,120.37

Finding the Fourth Proportional to 396,408.45, 547,044.01 and 215,120.37

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Solution

The fourth proportional to 396,408.45, 547,044.01 and 215,120.37 is: 296,866.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,408.45 : 547,044.01 = 215,120.37 : x
  2. Step 2: Convert to fraction form
    396,408.45/547,044.01 = 215,120.37/x
  3. Step 3: Cross multiply
    396,408.45x = 547,044.01 × 215,120.37
  4. Step 4: Simplify right side
    396,408.45x = 117,680,311,351.10
  5. Step 5: Solve for x
    x = 117,680,311,351.10/396,408.45
  6. Step 6: Final answer
    x = 296,866.31

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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.