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Finding the Fourth Proportional to 206,446.84, 309,957 and 106,680.76

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Solution

The fourth proportional to 206,446.84, 309,957 and 106,680.76 is: 160,169.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,446.84 : 309,957 = 106,680.76 : x
  2. Step 2: Convert to fraction form
    206,446.84/309,957 = 106,680.76/x
  3. Step 3: Cross multiply
    206,446.84x = 309,957 × 106,680.76
  4. Step 4: Simplify right side
    206,446.84x = 33,066,448,327.32
  5. Step 5: Solve for x
    x = 33,066,448,327.32/206,446.84
  6. Step 6: Final answer
    x = 160,169.31

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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.