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Finding the Fourth Proportional to 627,361.32, 940,512.97 and 272,107.78

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Solution

The fourth proportional to 627,361.32, 940,512.97 and 272,107.78 is: 407,932.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,361.32 : 940,512.97 = 272,107.78 : x
  2. Step 2: Convert to fraction form
    627,361.32/940,512.97 = 272,107.78/x
  3. Step 3: Cross multiply
    627,361.32x = 940,512.97 × 272,107.78
  4. Step 4: Simplify right side
    627,361.32x = 255,920,896,327.91
  5. Step 5: Solve for x
    x = 255,920,896,327.91/627,361.32
  6. Step 6: Final answer
    x = 407,932.22

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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.