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Finding the Fourth Proportional to 207,717.75, 311,606.78 and 65,514.96

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Solution

The fourth proportional to 207,717.75, 311,606.78 and 65,514.96 is: 98,281.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,717.75 : 311,606.78 = 65,514.96 : x
  2. Step 2: Convert to fraction form
    207,717.75/311,606.78 = 65,514.96/x
  3. Step 3: Cross multiply
    207,717.75x = 311,606.78 × 65,514.96
  4. Step 4: Simplify right side
    207,717.75x = 20,414,905,399.85
  5. Step 5: Solve for x
    x = 20,414,905,399.85/207,717.75
  6. Step 6: Final answer
    x = 98,281.95

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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.