Home / 207,917.70-311,876.55-113,439.30

Finding the Fourth Proportional to 207,917.70, 311,876.55 and 113,439.30

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Solution

The fourth proportional to 207,917.70, 311,876.55 and 113,439.30 is: 170,158.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,917.70 : 311,876.55 = 113,439.30 : x
  2. Step 2: Convert to fraction form
    207,917.70/311,876.55 = 113,439.30/x
  3. Step 3: Cross multiply
    207,917.70x = 311,876.55 × 113,439.30
  4. Step 4: Simplify right side
    207,917.70x = 35,379,057,518.42
  5. Step 5: Solve for x
    x = 35,379,057,518.42/207,917.70
  6. Step 6: Final answer
    x = 170,158.95

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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.