Home / 396,912.28-547,736.75-215,622.76

Finding the Fourth Proportional to 396,912.28, 547,736.75 and 215,622.76

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Solution

The fourth proportional to 396,912.28, 547,736.75 and 215,622.76 is: 297,558.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,912.28 : 547,736.75 = 215,622.76 : x
  2. Step 2: Convert to fraction form
    396,912.28/547,736.75 = 215,622.76/x
  3. Step 3: Cross multiply
    396,912.28x = 547,736.75 × 215,622.76
  4. Step 4: Simplify right side
    396,912.28x = 118,104,509,788.43
  5. Step 5: Solve for x
    x = 118,104,509,788.43/396,912.28
  6. Step 6: Final answer
    x = 297,558.22

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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.