Home / 207,558.06-311,380.86-67,305.78

Finding the Fourth Proportional to 207,558.06, 311,380.86 and 67,305.78

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Solution

The fourth proportional to 207,558.06, 311,380.86 and 67,305.78 is: 100,972.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,558.06 : 311,380.86 = 67,305.78 : x
  2. Step 2: Convert to fraction form
    207,558.06/311,380.86 = 67,305.78/x
  3. Step 3: Cross multiply
    207,558.06x = 311,380.86 × 67,305.78
  4. Step 4: Simplify right side
    207,558.06x = 20,957,731,659.37
  5. Step 5: Solve for x
    x = 20,957,731,659.37/207,558.06
  6. Step 6: Final answer
    x = 100,972.86

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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.