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Finding the Fourth Proportional to 206,162.76, 284,678 and 155,086.96

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Solution

The fourth proportional to 206,162.76, 284,678 and 155,086.96 is: 214,150.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,162.76 : 284,678 = 155,086.96 : x
  2. Step 2: Convert to fraction form
    206,162.76/284,678 = 155,086.96/x
  3. Step 3: Cross multiply
    206,162.76x = 284,678 × 155,086.96
  4. Step 4: Simplify right side
    206,162.76x = 44,149,845,598.88
  5. Step 5: Solve for x
    x = 44,149,845,598.88/206,162.76
  6. Step 6: Final answer
    x = 214,150.44

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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.