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Finding the Fourth Proportional to 388,282.92, 535,725.82 and 227,177.58

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Solution

The fourth proportional to 388,282.92, 535,725.82 and 227,177.58 is: 313,443.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,282.92 : 535,725.82 = 227,177.58 : x
  2. Step 2: Convert to fraction form
    388,282.92/535,725.82 = 227,177.58/x
  3. Step 3: Cross multiply
    388,282.92x = 535,725.82 × 227,177.58
  4. Step 4: Simplify right side
    388,282.92x = 121,704,895,331.12
  5. Step 5: Solve for x
    x = 121,704,895,331.12/388,282.92
  6. Step 6: Final answer
    x = 313,443.86

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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.