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Finding the Fourth Proportional to 308,367, 425,546.46 and 174,231

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Solution

The fourth proportional to 308,367, 425,546.46 and 174,231 is: 240,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,367 : 425,546.46 = 174,231 : x
  2. Step 2: Convert to fraction form
    308,367/425,546.46 = 174,231/x
  3. Step 3: Cross multiply
    308,367x = 425,546.46 × 174,231
  4. Step 4: Simplify right side
    308,367x = 74,143,385,272.26
  5. Step 5: Solve for x
    x = 74,143,385,272.26/308,367
  6. Step 6: Final answer
    x = 240,438.78

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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.