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Finding the Fourth Proportional to 204,924.90, 307,059.30 and 129,910.80

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Solution

The fourth proportional to 204,924.90, 307,059.30 and 129,910.80 is: 194,658.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,924.90 : 307,059.30 = 129,910.80 : x
  2. Step 2: Convert to fraction form
    204,924.90/307,059.30 = 129,910.80/x
  3. Step 3: Cross multiply
    204,924.90x = 307,059.30 × 129,910.80
  4. Step 4: Simplify right side
    204,924.90x = 39,890,319,310.44
  5. Step 5: Solve for x
    x = 39,890,319,310.44/204,924.90
  6. Step 6: Final answer
    x = 194,658.23

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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.