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Finding the Fourth Proportional to 351,864, 485,572.32 and 192,888

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Solution

The fourth proportional to 351,864, 485,572.32 and 192,888 is: 266,185.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,864 : 485,572.32 = 192,888 : x
  2. Step 2: Convert to fraction form
    351,864/485,572.32 = 192,888/x
  3. Step 3: Cross multiply
    351,864x = 485,572.32 × 192,888
  4. Step 4: Simplify right side
    351,864x = 93,661,073,660.16
  5. Step 5: Solve for x
    x = 93,661,073,660.16/351,864
  6. Step 6: Final answer
    x = 266,185.44

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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.