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Finding the Fourth Proportional to 279,635.84, 419,120.76 and 161,061.56

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Solution

The fourth proportional to 279,635.84, 419,120.76 and 161,061.56 is: 241,400.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,635.84 : 419,120.76 = 161,061.56 : x
  2. Step 2: Convert to fraction form
    279,635.84/419,120.76 = 161,061.56/x
  3. Step 3: Cross multiply
    279,635.84x = 419,120.76 × 161,061.56
  4. Step 4: Simplify right side
    279,635.84x = 67,504,243,433.99
  5. Step 5: Solve for x
    x = 67,504,243,433.99/279,635.84
  6. Step 6: Final answer
    x = 241,400.54

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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.