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Finding the Fourth Proportional to 207,475.20, 311,178.48 and 74,335.68

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Solution

The fourth proportional to 207,475.20, 311,178.48 and 74,335.68 is: 111,491.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,475.20 : 311,178.48 = 74,335.68 : x
  2. Step 2: Convert to fraction form
    207,475.20/311,178.48 = 74,335.68/x
  3. Step 3: Cross multiply
    207,475.20x = 311,178.48 × 74,335.68
  4. Step 4: Simplify right side
    207,475.20x = 23,131,663,912.17
  5. Step 5: Solve for x
    x = 23,131,663,912.17/207,475.20
  6. Step 6: Final answer
    x = 111,491.22

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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.