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Finding the Fourth Proportional to 207,662.45, 311,503.57 and 100,919.23

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Solution

The fourth proportional to 207,662.45, 311,503.57 and 100,919.23 is: 151,383.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,662.45 : 311,503.57 = 100,919.23 : x
  2. Step 2: Convert to fraction form
    207,662.45/311,503.57 = 100,919.23/x
  3. Step 3: Cross multiply
    207,662.45x = 311,503.57 × 100,919.23
  4. Step 4: Simplify right side
    207,662.45x = 31,436,701,147.80
  5. Step 5: Solve for x
    x = 31,436,701,147.80/207,662.45
  6. Step 6: Final answer
    x = 151,383.66

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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.