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Finding the Fourth Proportional to 388,304.60, 535,896.51 and 227,149.43

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Solution

The fourth proportional to 388,304.60, 535,896.51 and 227,149.43 is: 313,487.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,304.60 : 535,896.51 = 227,149.43 : x
  2. Step 2: Convert to fraction form
    388,304.60/535,896.51 = 227,149.43/x
  3. Step 3: Cross multiply
    388,304.60x = 535,896.51 × 227,149.43
  4. Step 4: Simplify right side
    388,304.60x = 121,728,586,785.49
  5. Step 5: Solve for x
    x = 121,728,586,785.49/388,304.60
  6. Step 6: Final answer
    x = 313,487.37

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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.