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Finding the Fourth Proportional to 205,469.40, 308,204.10 and 100,234.20

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Solution

The fourth proportional to 205,469.40, 308,204.10 and 100,234.20 is: 150,351.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,469.40 : 308,204.10 = 100,234.20 : x
  2. Step 2: Convert to fraction form
    205,469.40/308,204.10 = 100,234.20/x
  3. Step 3: Cross multiply
    205,469.40x = 308,204.10 × 100,234.20
  4. Step 4: Simplify right side
    205,469.40x = 30,892,591,400.22
  5. Step 5: Solve for x
    x = 30,892,591,400.22/205,469.40
  6. Step 6: Final answer
    x = 150,351.30

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1.5x scale

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.