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Finding the Fourth Proportional to 206,330.36, 309,469.01 and 79,883.91

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Solution

The fourth proportional to 206,330.36, 309,469.01 and 79,883.91 is: 119,815.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,330.36 : 309,469.01 = 79,883.91 : x
  2. Step 2: Convert to fraction form
    206,330.36/309,469.01 = 79,883.91/x
  3. Step 3: Cross multiply
    206,330.36x = 309,469.01 × 79,883.91
  4. Step 4: Simplify right side
    206,330.36x = 24,721,594,143.21
  5. Step 5: Solve for x
    x = 24,721,594,143.21/206,330.36
  6. Step 6: Final answer
    x = 119,815.59

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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.