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Finding the Fourth Proportional to 396,849, 595,359.72 and 130,636.56

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Solution

The fourth proportional to 396,849, 595,359.72 and 130,636.56 is: 195,983.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,849 : 595,359.72 = 130,636.56 : x
  2. Step 2: Convert to fraction form
    396,849/595,359.72 = 130,636.56/x
  3. Step 3: Cross multiply
    396,849x = 595,359.72 × 130,636.56
  4. Step 4: Simplify right side
    396,849x = 77,775,745,783.36
  5. Step 5: Solve for x
    x = 77,775,745,783.36/396,849
  6. Step 6: Final answer
    x = 195,983.22

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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.