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Finding the Fourth Proportional to 490,361.46, 676,694.19 and 272,564.43

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Solution

The fourth proportional to 490,361.46, 676,694.19 and 272,564.43 is: 376,136.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,361.46 : 676,694.19 = 272,564.43 : x
  2. Step 2: Convert to fraction form
    490,361.46/676,694.19 = 272,564.43/x
  3. Step 3: Cross multiply
    490,361.46x = 676,694.19 × 272,564.43
  4. Step 4: Simplify right side
    490,361.46x = 184,442,766,181.66
  5. Step 5: Solve for x
    x = 184,442,766,181.66/490,361.46
  6. Step 6: Final answer
    x = 376,136.34

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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.