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Finding the Fourth Proportional to 207,662.20, 311,493.30 and 136,803.40

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Solution

The fourth proportional to 207,662.20, 311,493.30 and 136,803.40 is: 205,205.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,662.20 : 311,493.30 = 136,803.40 : x
  2. Step 2: Convert to fraction form
    207,662.20/311,493.30 = 136,803.40/x
  3. Step 3: Cross multiply
    207,662.20x = 311,493.30 × 136,803.40
  4. Step 4: Simplify right side
    207,662.20x = 42,613,342,517.22
  5. Step 5: Solve for x
    x = 42,613,342,517.22/207,662.20
  6. Step 6: Final answer
    x = 205,205.10

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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.