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Finding the Fourth Proportional to 207,937.20, 311,905.80 and 192,190.80

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Solution

The fourth proportional to 207,937.20, 311,905.80 and 192,190.80 is: 288,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,937.20 : 311,905.80 = 192,190.80 : x
  2. Step 2: Convert to fraction form
    207,937.20/311,905.80 = 192,190.80/x
  3. Step 3: Cross multiply
    207,937.20x = 311,905.80 × 192,190.80
  4. Step 4: Simplify right side
    207,937.20x = 59,945,425,226.64
  5. Step 5: Solve for x
    x = 59,945,425,226.64/207,937.20
  6. Step 6: Final answer
    x = 288,286.20

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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.