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Finding the Fourth Proportional to 207,571.20, 311,322.48 and 74,431.20

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Solution

The fourth proportional to 207,571.20, 311,322.48 and 74,431.20 is: 111,634.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,571.20 : 311,322.48 = 74,431.20 : x
  2. Step 2: Convert to fraction form
    207,571.20/311,322.48 = 74,431.20/x
  3. Step 3: Cross multiply
    207,571.20x = 311,322.48 × 74,431.20
  4. Step 4: Simplify right side
    207,571.20x = 23,172,105,773.38
  5. Step 5: Solve for x
    x = 23,172,105,773.38/207,571.20
  6. Step 6: Final answer
    x = 111,634.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.