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Finding the Fourth Proportional to 230,388.89, 345,739.03 and 80,630.49

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Solution

The fourth proportional to 230,388.89, 345,739.03 and 80,630.49 is: 121,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,388.89 : 345,739.03 = 80,630.49 : x
  2. Step 2: Convert to fraction form
    230,388.89/345,739.03 = 80,630.49/x
  3. Step 3: Cross multiply
    230,388.89x = 345,739.03 × 80,630.49
  4. Step 4: Simplify right side
    230,388.89x = 27,877,107,199.45
  5. Step 5: Solve for x
    x = 27,877,107,199.45/230,388.89
  6. Step 6: Final answer
    x = 121,000.22

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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.