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Finding the Fourth Proportional to 229,976.60, 345,008.74 and 80,259.64

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Solution

The fourth proportional to 229,976.60, 345,008.74 and 80,259.64 is: 120,404.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,976.60 : 345,008.74 = 80,259.64 : x
  2. Step 2: Convert to fraction form
    229,976.60/345,008.74 = 80,259.64/x
  3. Step 3: Cross multiply
    229,976.60x = 345,008.74 × 80,259.64
  4. Step 4: Simplify right side
    229,976.60x = 27,690,277,269.25
  5. Step 5: Solve for x
    x = 27,690,277,269.25/229,976.60
  6. Step 6: Final answer
    x = 120,404.76

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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.