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Finding the Fourth Proportional to 322,356.78, 445,120.92 and 268,921.89

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Solution

The fourth proportional to 322,356.78, 445,120.92 and 268,921.89 is: 371,336.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,356.78 : 445,120.92 = 268,921.89 : x
  2. Step 2: Convert to fraction form
    322,356.78/445,120.92 = 268,921.89/x
  3. Step 3: Cross multiply
    322,356.78x = 445,120.92 × 268,921.89
  4. Step 4: Simplify right side
    322,356.78x = 119,702,759,084.94
  5. Step 5: Solve for x
    x = 119,702,759,084.94/322,356.78
  6. Step 6: Final answer
    x = 371,336.25

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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.