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Finding the Fourth Proportional to 225,464.87, 311,144.89 and 123,499.73

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Solution

The fourth proportional to 225,464.87, 311,144.89 and 123,499.73 is: 170,431.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,464.87 : 311,144.89 = 123,499.73 : x
  2. Step 2: Convert to fraction form
    225,464.87/311,144.89 = 123,499.73/x
  3. Step 3: Cross multiply
    225,464.87x = 311,144.89 × 123,499.73
  4. Step 4: Simplify right side
    225,464.87x = 38,426,309,905.88
  5. Step 5: Solve for x
    x = 38,426,309,905.88/225,464.87
  6. Step 6: Final answer
    x = 170,431.47

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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.