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Finding the Fourth Proportional to 396,884.86, 595,401.12 and 130,664.08

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Solution

The fourth proportional to 396,884.86, 595,401.12 and 130,664.08 is: 196,020.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,884.86 : 595,401.12 = 130,664.08 : x
  2. Step 2: Convert to fraction form
    396,884.86/595,401.12 = 130,664.08/x
  3. Step 3: Cross multiply
    396,884.86x = 595,401.12 × 130,664.08
  4. Step 4: Simplify right side
    396,884.86x = 77,797,539,575.77
  5. Step 5: Solve for x
    x = 77,797,539,575.77/396,884.86
  6. Step 6: Final answer
    x = 196,020.43

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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.