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Finding the Fourth Proportional to 396,809.28, 547,296.75 and 275,890.05

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Solution

The fourth proportional to 396,809.28, 547,296.75 and 275,890.05 is: 380,519.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,809.28 : 547,296.75 = 275,890.05 : x
  2. Step 2: Convert to fraction form
    396,809.28/547,296.75 = 275,890.05/x
  3. Step 3: Cross multiply
    396,809.28x = 547,296.75 × 275,890.05
  4. Step 4: Simplify right side
    396,809.28x = 150,993,727,722.34
  5. Step 5: Solve for x
    x = 150,993,727,722.34/396,809.28
  6. Step 6: Final answer
    x = 380,519.65

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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.