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Finding the Fourth Proportional to 199,620.30, 299,430.45 and 136,634.70

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Solution

The fourth proportional to 199,620.30, 299,430.45 and 136,634.70 is: 204,952.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,620.30 : 299,430.45 = 136,634.70 : x
  2. Step 2: Convert to fraction form
    199,620.30/299,430.45 = 136,634.70/x
  3. Step 3: Cross multiply
    199,620.30x = 299,430.45 × 136,634.70
  4. Step 4: Simplify right side
    199,620.30x = 40,912,589,706.62
  5. Step 5: Solve for x
    x = 40,912,589,706.62/199,620.30
  6. Step 6: Final answer
    x = 204,952.05

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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.