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Finding the Fourth Proportional to 396,672.87, 547,273.38 and 253,515.50

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Solution

The fourth proportional to 396,672.87, 547,273.38 and 253,515.50 is: 349,764.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,672.87 : 547,273.38 = 253,515.50 : x
  2. Step 2: Convert to fraction form
    396,672.87/547,273.38 = 253,515.50/x
  3. Step 3: Cross multiply
    396,672.87x = 547,273.38 × 253,515.50
  4. Step 4: Simplify right side
    396,672.87x = 138,742,280,563.45
  5. Step 5: Solve for x
    x = 138,742,280,563.45/396,672.87
  6. Step 6: Final answer
    x = 349,764.99

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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.