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Finding the Fourth Proportional to 396,634.11, 595,187.55 and 143,934.32

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Solution

The fourth proportional to 396,634.11, 595,187.55 and 143,934.32 is: 215,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,634.11 : 595,187.55 = 143,934.32 : x
  2. Step 2: Convert to fraction form
    396,634.11/595,187.55 = 143,934.32/x
  3. Step 3: Cross multiply
    396,634.11x = 595,187.55 × 143,934.32
  4. Step 4: Simplify right side
    396,634.11x = 85,667,915,281.72
  5. Step 5: Solve for x
    x = 85,667,915,281.72/396,634.11
  6. Step 6: Final answer
    x = 215,987.26

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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.