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Finding the Fourth Proportional to 322,640.40, 445,242.24 and 179,391.88

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Solution

The fourth proportional to 322,640.40, 445,242.24 and 179,391.88 is: 247,559.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,640.40 : 445,242.24 = 179,391.88 : x
  2. Step 2: Convert to fraction form
    322,640.40/445,242.24 = 179,391.88/x
  3. Step 3: Cross multiply
    322,640.40x = 445,242.24 × 179,391.88
  4. Step 4: Simplify right side
    322,640.40x = 79,872,842,489.01
  5. Step 5: Solve for x
    x = 79,872,842,489.01/322,640.40
  6. Step 6: Final answer
    x = 247,559.95

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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.