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Finding the Fourth Proportional to 200,640.97, 276,912.81 and 124,184.58

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Solution

The fourth proportional to 200,640.97, 276,912.81 and 124,184.58 is: 171,392.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,640.97 : 276,912.81 = 124,184.58 : x
  2. Step 2: Convert to fraction form
    200,640.97/276,912.81 = 124,184.58/x
  3. Step 3: Cross multiply
    200,640.97x = 276,912.81 × 124,184.58
  4. Step 4: Simplify right side
    200,640.97x = 34,388,299,968.05
  5. Step 5: Solve for x
    x = 34,388,299,968.05/200,640.97
  6. Step 6: Final answer
    x = 171,392.22

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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.