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Finding the Fourth Proportional to 225,520.56, 311,003.46 and 134,861.76

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Solution

The fourth proportional to 225,520.56, 311,003.46 and 134,861.76 is: 185,980.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,520.56 : 311,003.46 = 134,861.76 : x
  2. Step 2: Convert to fraction form
    225,520.56/311,003.46 = 134,861.76/x
  3. Step 3: Cross multiply
    225,520.56x = 311,003.46 × 134,861.76
  4. Step 4: Simplify right side
    225,520.56x = 41,942,473,981.69
  5. Step 5: Solve for x
    x = 41,942,473,981.69/225,520.56
  6. Step 6: Final answer
    x = 185,980.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.