Home / 396,478.84-547,141.32-215,190.76

Finding the Fourth Proportional to 396,478.84, 547,141.32 and 215,190.76

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Solution

The fourth proportional to 396,478.84, 547,141.32 and 215,190.76 is: 296,963.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,478.84 : 547,141.32 = 215,190.76 : x
  2. Step 2: Convert to fraction form
    396,478.84/547,141.32 = 215,190.76/x
  3. Step 3: Cross multiply
    396,478.84x = 547,141.32 × 215,190.76
  4. Step 4: Simplify right side
    396,478.84x = 117,739,756,478.20
  5. Step 5: Solve for x
    x = 117,739,756,478.20/396,478.84
  6. Step 6: Final answer
    x = 296,963.53

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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.