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Finding the Fourth Proportional to 206,373.71, 309,560.63 and 136,236.62

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Solution

The fourth proportional to 206,373.71, 309,560.63 and 136,236.62 is: 204,354.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,373.71 : 309,560.63 = 136,236.62 : x
  2. Step 2: Convert to fraction form
    206,373.71/309,560.63 = 136,236.62/x
  3. Step 3: Cross multiply
    206,373.71x = 309,560.63 × 136,236.62
  4. Step 4: Simplify right side
    206,373.71x = 42,173,492,972.07
  5. Step 5: Solve for x
    x = 42,173,492,972.07/206,373.71
  6. Step 6: Final answer
    x = 204,354.97

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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.