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Finding the Fourth Proportional to 207,240.70, 311,321.86 and 201,711.10

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Solution

The fourth proportional to 207,240.70, 311,321.86 and 201,711.10 is: 303,015.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,240.70 : 311,321.86 = 201,711.10 : x
  2. Step 2: Convert to fraction form
    207,240.70/311,321.86 = 201,711.10/x
  3. Step 3: Cross multiply
    207,240.70x = 311,321.86 × 201,711.10
  4. Step 4: Simplify right side
    207,240.70x = 62,797,074,834.65
  5. Step 5: Solve for x
    x = 62,797,074,834.65/207,240.70
  6. Step 6: Final answer
    x = 303,015.16

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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.