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Finding the Fourth Proportional to 308,819.22, 426,236.94 and 188,000.34

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Solution

The fourth proportional to 308,819.22, 426,236.94 and 188,000.34 is: 259,480.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,819.22 : 426,236.94 = 188,000.34 : x
  2. Step 2: Convert to fraction form
    308,819.22/426,236.94 = 188,000.34/x
  3. Step 3: Cross multiply
    308,819.22x = 426,236.94 × 188,000.34
  4. Step 4: Simplify right side
    308,819.22x = 80,132,689,640.56
  5. Step 5: Solve for x
    x = 80,132,689,640.56/308,819.22
  6. Step 6: Final answer
    x = 259,480.90

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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.