Home / 207,538.12-311,404.38-102,299.68

Finding the Fourth Proportional to 207,538.12, 311,404.38 and 102,299.68

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Solution

The fourth proportional to 207,538.12, 311,404.38 and 102,299.68 is: 153,497.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,538.12 : 311,404.38 = 102,299.68 : x
  2. Step 2: Convert to fraction form
    207,538.12/311,404.38 = 102,299.68/x
  3. Step 3: Cross multiply
    207,538.12x = 311,404.38 × 102,299.68
  4. Step 4: Simplify right side
    207,538.12x = 31,856,568,424.60
  5. Step 5: Solve for x
    x = 31,856,568,424.60/207,538.12
  6. Step 6: Final answer
    x = 153,497.43

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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.