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Finding the Fourth Proportional to 322,808.13, 445,489.61 and 269,003.07

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Solution

The fourth proportional to 322,808.13, 445,489.61 and 269,003.07 is: 371,236.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,808.13 : 445,489.61 = 269,003.07 : x
  2. Step 2: Convert to fraction form
    322,808.13/445,489.61 = 269,003.07/x
  3. Step 3: Cross multiply
    322,808.13x = 445,489.61 × 269,003.07
  4. Step 4: Simplify right side
    322,808.13x = 119,838,071,398.09
  5. Step 5: Solve for x
    x = 119,838,071,398.09/322,808.13
  6. Step 6: Final answer
    x = 371,236.22

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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.