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Finding the Fourth Proportional to 308,996.97, 426,427.96 and 173,029.71

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Solution

The fourth proportional to 308,996.97, 426,427.96 and 173,029.71 is: 238,787.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,996.97 : 426,427.96 = 173,029.71 : x
  2. Step 2: Convert to fraction form
    308,996.97/426,427.96 = 173,029.71/x
  3. Step 3: Cross multiply
    308,996.97x = 426,427.96 × 173,029.71
  4. Step 4: Simplify right side
    308,996.97x = 73,784,706,254.69
  5. Step 5: Solve for x
    x = 73,784,706,254.69/308,996.97
  6. Step 6: Final answer
    x = 238,787.80

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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.