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Finding the Fourth Proportional to 206,874.60, 310,311.90 and 192,112.35

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Solution

The fourth proportional to 206,874.60, 310,311.90 and 192,112.35 is: 288,168.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,874.60 : 310,311.90 = 192,112.35 : x
  2. Step 2: Convert to fraction form
    206,874.60/310,311.90 = 192,112.35/x
  3. Step 3: Cross multiply
    206,874.60x = 310,311.90 × 192,112.35
  4. Step 4: Simplify right side
    206,874.60x = 59,614,748,341.97
  5. Step 5: Solve for x
    x = 59,614,748,341.97/206,874.60
  6. Step 6: Final answer
    x = 288,168.53

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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.