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Finding the Fourth Proportional to 494,287.91, 682,146.73 and 279,447.96

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Solution

The fourth proportional to 494,287.91, 682,146.73 and 279,447.96 is: 385,654.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,287.91 : 682,146.73 = 279,447.96 : x
  2. Step 2: Convert to fraction form
    494,287.91/682,146.73 = 279,447.96/x
  3. Step 3: Cross multiply
    494,287.91x = 682,146.73 × 279,447.96
  4. Step 4: Simplify right side
    494,287.91x = 190,624,512,119.17
  5. Step 5: Solve for x
    x = 190,624,512,119.17/494,287.91
  6. Step 6: Final answer
    x = 385,654.81

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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.