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Finding the Fourth Proportional to 388,261.35, 535,717.98 and 227,084.91

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Solution

The fourth proportional to 388,261.35, 535,717.98 and 227,084.91 is: 313,328.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,261.35 : 535,717.98 = 227,084.91 : x
  2. Step 2: Convert to fraction form
    388,261.35/535,717.98 = 227,084.91/x
  3. Step 3: Cross multiply
    388,261.35x = 535,717.98 × 227,084.91
  4. Step 4: Simplify right side
    388,261.35x = 121,653,469,273.68
  5. Step 5: Solve for x
    x = 121,653,469,273.68/388,261.35
  6. Step 6: Final answer
    x = 313,328.82

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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.