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Finding the Fourth Proportional to 230,385.89, 345,734.53 and 80,627.49

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Solution

The fourth proportional to 230,385.89, 345,734.53 and 80,627.49 is: 120,995.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,385.89 : 345,734.53 = 80,627.49 : x
  2. Step 2: Convert to fraction form
    230,385.89/345,734.53 = 80,627.49/x
  3. Step 3: Cross multiply
    230,385.89x = 345,734.53 × 80,627.49
  4. Step 4: Simplify right side
    230,385.89x = 27,875,707,158.66
  5. Step 5: Solve for x
    x = 27,875,707,158.66/230,385.89
  6. Step 6: Final answer
    x = 120,995.72

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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.