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Finding the Fourth Proportional to 396,991.80, 594,503.55 and 254,618.10

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Solution

The fourth proportional to 396,991.80, 594,503.55 and 254,618.10 is: 381,295.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,991.80 : 594,503.55 = 254,618.10 : x
  2. Step 2: Convert to fraction form
    396,991.80/594,503.55 = 254,618.10/x
  3. Step 3: Cross multiply
    396,991.80x = 594,503.55 × 254,618.10
  4. Step 4: Simplify right side
    396,991.80x = 151,371,364,344.26
  5. Step 5: Solve for x
    x = 151,371,364,344.26/396,991.80
  6. Step 6: Final answer
    x = 381,295.95

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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.