Home / 207,904.70-311,857.05-199,739.90

Finding the Fourth Proportional to 207,904.70, 311,857.05 and 199,739.90

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Solution

The fourth proportional to 207,904.70, 311,857.05 and 199,739.90 is: 299,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,904.70 : 311,857.05 = 199,739.90 : x
  2. Step 2: Convert to fraction form
    207,904.70/311,857.05 = 199,739.90/x
  3. Step 3: Cross multiply
    207,904.70x = 311,857.05 × 199,739.90
  4. Step 4: Simplify right side
    207,904.70x = 62,290,295,981.30
  5. Step 5: Solve for x
    x = 62,290,295,981.30/207,904.70
  6. Step 6: Final answer
    x = 299,609.85

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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.