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Finding the Fourth Proportional to 206,478.60, 284,961.96 and 115,859.04

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Solution

The fourth proportional to 206,478.60, 284,961.96 and 115,859.04 is: 159,897.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,478.60 : 284,961.96 = 115,859.04 : x
  2. Step 2: Convert to fraction form
    206,478.60/284,961.96 = 115,859.04/x
  3. Step 3: Cross multiply
    206,478.60x = 284,961.96 × 115,859.04
  4. Step 4: Simplify right side
    206,478.60x = 33,015,419,122.12
  5. Step 5: Solve for x
    x = 33,015,419,122.12/206,478.60
  6. Step 6: Final answer
    x = 159,897.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.