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Finding the Fourth Proportional to 388,197.73, 535,700.69 and 224,857.43

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Solution

The fourth proportional to 388,197.73, 535,700.69 and 224,857.43 is: 310,296.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,197.73 : 535,700.69 = 224,857.43 : x
  2. Step 2: Convert to fraction form
    388,197.73/535,700.69 = 224,857.43/x
  3. Step 3: Cross multiply
    388,197.73x = 535,700.69 × 224,857.43
  4. Step 4: Simplify right side
    388,197.73x = 120,456,278,577.68
  5. Step 5: Solve for x
    x = 120,456,278,577.68/388,197.73
  6. Step 6: Final answer
    x = 310,296.20

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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.