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Finding the Fourth Proportional to 396,343.40, 594,515.10 and 254,625.80

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Solution

The fourth proportional to 396,343.40, 594,515.10 and 254,625.80 is: 381,938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,343.40 : 594,515.10 = 254,625.80 : x
  2. Step 2: Convert to fraction form
    396,343.40/594,515.10 = 254,625.80/x
  3. Step 3: Cross multiply
    396,343.40x = 594,515.10 × 254,625.80
  4. Step 4: Simplify right side
    396,343.40x = 151,378,882,949.58
  5. Step 5: Solve for x
    x = 151,378,882,949.58/396,343.40
  6. Step 6: Final answer
    x = 381,938.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.