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Finding the Fourth Proportional to 396,756.58, 595,157.34 and 126,908.40

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Solution

The fourth proportional to 396,756.58, 595,157.34 and 126,908.40 is: 190,369.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,756.58 : 595,157.34 = 126,908.40 : x
  2. Step 2: Convert to fraction form
    396,756.58/595,157.34 = 126,908.40/x
  3. Step 3: Cross multiply
    396,756.58x = 595,157.34 × 126,908.40
  4. Step 4: Simplify right side
    396,756.58x = 75,530,465,767.66
  5. Step 5: Solve for x
    x = 75,530,465,767.66/396,756.58
  6. Step 6: Final answer
    x = 190,369.79

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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.