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Finding the Fourth Proportional to 308,361.56, 425,383.08 and 206,391.29

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Solution

The fourth proportional to 308,361.56, 425,383.08 and 206,391.29 is: 284,715.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,361.56 : 425,383.08 = 206,391.29 : x
  2. Step 2: Convert to fraction form
    308,361.56/425,383.08 = 206,391.29/x
  3. Step 3: Cross multiply
    308,361.56x = 425,383.08 × 206,391.29
  4. Step 4: Simplify right side
    308,361.56x = 87,795,362,625.37
  5. Step 5: Solve for x
    x = 87,795,362,625.37/308,361.56
  6. Step 6: Final answer
    x = 284,715.65

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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.