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Finding the Fourth Proportional to 206,069.88, 309,149.20 and 63,912.28

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Solution

The fourth proportional to 206,069.88, 309,149.20 and 63,912.28 is: 95,882.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,069.88 : 309,149.20 = 63,912.28 : x
  2. Step 2: Convert to fraction form
    206,069.88/309,149.20 = 63,912.28/x
  3. Step 3: Cross multiply
    206,069.88x = 309,149.20 × 63,912.28
  4. Step 4: Simplify right side
    206,069.88x = 19,758,430,232.18
  5. Step 5: Solve for x
    x = 19,758,430,232.18/206,069.88
  6. Step 6: Final answer
    x = 95,882.18

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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.