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Finding the Fourth Proportional to 396,670.80, 595,081.62 and 130,508.04

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Solution

The fourth proportional to 396,670.80, 595,081.62 and 130,508.04 is: 195,786.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,670.80 : 595,081.62 = 130,508.04 : x
  2. Step 2: Convert to fraction form
    396,670.80/595,081.62 = 130,508.04/x
  3. Step 3: Cross multiply
    396,670.80x = 595,081.62 × 130,508.04
  4. Step 4: Simplify right side
    396,670.80x = 77,662,935,866.22
  5. Step 5: Solve for x
    x = 77,662,935,866.22/396,670.80
  6. Step 6: Final answer
    x = 195,786.87

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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.