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Finding the Fourth Proportional to 207,249.20, 311,334.60 and 201,719.60

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Solution

The fourth proportional to 207,249.20, 311,334.60 and 201,719.60 is: 303,027.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,249.20 : 311,334.60 = 201,719.60 : x
  2. Step 2: Convert to fraction form
    207,249.20/311,334.60 = 201,719.60/x
  3. Step 3: Cross multiply
    207,249.20x = 311,334.60 × 201,719.60
  4. Step 4: Simplify right side
    207,249.20x = 62,802,290,978.16
  5. Step 5: Solve for x
    x = 62,802,290,978.16/207,249.20
  6. Step 6: Final answer
    x = 303,027.91

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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.