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Finding the Fourth Proportional to 396,436.68, 594,659.88 and 115,959.60

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Solution

The fourth proportional to 396,436.68, 594,659.88 and 115,959.60 is: 173,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,436.68 : 594,659.88 = 115,959.60 : x
  2. Step 2: Convert to fraction form
    396,436.68/594,659.88 = 115,959.60/x
  3. Step 3: Cross multiply
    396,436.68x = 594,659.88 × 115,959.60
  4. Step 4: Simplify right side
    396,436.68x = 68,956,521,820.85
  5. Step 5: Solve for x
    x = 68,956,521,820.85/396,436.68
  6. Step 6: Final answer
    x = 173,940.82

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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.