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Finding the Fourth Proportional to 351,999.20, 527,998.80 and 165,375.20

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Solution

The fourth proportional to 351,999.20, 527,998.80 and 165,375.20 is: 248,062.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,999.20 : 527,998.80 = 165,375.20 : x
  2. Step 2: Convert to fraction form
    351,999.20/527,998.80 = 165,375.20/x
  3. Step 3: Cross multiply
    351,999.20x = 527,998.80 × 165,375.20
  4. Step 4: Simplify right side
    351,999.20x = 87,317,907,149.76
  5. Step 5: Solve for x
    x = 87,317,907,149.76/351,999.20
  6. Step 6: Final answer
    x = 248,062.80

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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.