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Finding the Fourth Proportional to 206,102.30, 309,171.90 and 56,343.37

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Solution

The fourth proportional to 206,102.30, 309,171.90 and 56,343.37 is: 84,520.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,102.30 : 309,171.90 = 56,343.37 : x
  2. Step 2: Convert to fraction form
    206,102.30/309,171.90 = 56,343.37/x
  3. Step 3: Cross multiply
    206,102.30x = 309,171.90 × 56,343.37
  4. Step 4: Simplify right side
    206,102.30x = 17,419,786,755.30
  5. Step 5: Solve for x
    x = 17,419,786,755.30/206,102.30
  6. Step 6: Final answer
    x = 84,520.10

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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.