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Finding the Fourth Proportional to 207,478.68, 311,246.82 and 67,191.96

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Solution

The fourth proportional to 207,478.68, 311,246.82 and 67,191.96 is: 100,797.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,478.68 : 311,246.82 = 67,191.96 : x
  2. Step 2: Convert to fraction form
    207,478.68/311,246.82 = 67,191.96/x
  3. Step 3: Cross multiply
    207,478.68x = 311,246.82 × 67,191.96
  4. Step 4: Simplify right side
    207,478.68x = 20,913,283,879.57
  5. Step 5: Solve for x
    x = 20,913,283,879.57/207,478.68
  6. Step 6: Final answer
    x = 100,797.27

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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.