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Finding the Fourth Proportional to 324,728.05, 447,834.54 and 203,880.64

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Solution

The fourth proportional to 324,728.05, 447,834.54 and 203,880.64 is: 281,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,728.05 : 447,834.54 = 203,880.64 : x
  2. Step 2: Convert to fraction form
    324,728.05/447,834.54 = 203,880.64/x
  3. Step 3: Cross multiply
    324,728.05x = 447,834.54 × 203,880.64
  4. Step 4: Simplify right side
    324,728.05x = 91,304,792,629.31
  5. Step 5: Solve for x
    x = 91,304,792,629.31/324,728.05
  6. Step 6: Final answer
    x = 281,173.10

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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.