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Finding the Fourth Proportional to 297,687.72, 410,807.42 and 161,720.60

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Solution

The fourth proportional to 297,687.72, 410,807.42 and 161,720.60 is: 223,173.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,687.72 : 410,807.42 = 161,720.60 : x
  2. Step 2: Convert to fraction form
    297,687.72/410,807.42 = 161,720.60/x
  3. Step 3: Cross multiply
    297,687.72x = 410,807.42 × 161,720.60
  4. Step 4: Simplify right side
    297,687.72x = 66,436,022,446.85
  5. Step 5: Solve for x
    x = 66,436,022,446.85/297,687.72
  6. Step 6: Final answer
    x = 223,173.54

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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.