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Finding the Fourth Proportional to 308,362.06, 425,383.77 and 206,391.79

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Solution

The fourth proportional to 308,362.06, 425,383.77 and 206,391.79 is: 284,716.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,362.06 : 425,383.77 = 206,391.79 : x
  2. Step 2: Convert to fraction form
    308,362.06/425,383.77 = 206,391.79/x
  3. Step 3: Cross multiply
    308,362.06x = 425,383.77 × 206,391.79
  4. Step 4: Simplify right side
    308,362.06x = 87,795,717,727.25
  5. Step 5: Solve for x
    x = 87,795,717,727.25/308,362.06
  6. Step 6: Final answer
    x = 284,716.34

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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.