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Finding the Fourth Proportional to 225,515.56, 311,211.84 and 123,538.79

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Solution

The fourth proportional to 225,515.56, 311,211.84 and 123,538.79 is: 170,483.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,515.56 : 311,211.84 = 123,538.79 : x
  2. Step 2: Convert to fraction form
    225,515.56/311,211.84 = 123,538.79/x
  3. Step 3: Cross multiply
    225,515.56x = 311,211.84 × 123,538.79
  4. Step 4: Simplify right side
    225,515.56x = 38,446,734,147.27
  5. Step 5: Solve for x
    x = 38,446,734,147.27/225,515.56
  6. Step 6: Final answer
    x = 170,483.73

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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.