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Finding the Fourth Proportional to 388,299.60, 535,889.61 and 227,144.43

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Solution

The fourth proportional to 388,299.60, 535,889.61 and 227,144.43 is: 313,480.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,299.60 : 535,889.61 = 227,144.43 : x
  2. Step 2: Convert to fraction form
    388,299.60/535,889.61 = 227,144.43/x
  3. Step 3: Cross multiply
    388,299.60x = 535,889.61 × 227,144.43
  4. Step 4: Simplify right side
    388,299.60x = 121,724,340,006.37
  5. Step 5: Solve for x
    x = 121,724,340,006.37/388,299.60
  6. Step 6: Final answer
    x = 313,480.47

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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.