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Finding the Fourth Proportional to 308,892.90, 426,266.76 and 171,068.97

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Solution

The fourth proportional to 308,892.90, 426,266.76 and 171,068.97 is: 236,072.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,892.90 : 426,266.76 = 171,068.97 : x
  2. Step 2: Convert to fraction form
    308,892.90/426,266.76 = 171,068.97/x
  3. Step 3: Cross multiply
    308,892.90x = 426,266.76 × 171,068.97
  4. Step 4: Simplify right side
    308,892.90x = 72,921,015,578.44
  5. Step 5: Solve for x
    x = 72,921,015,578.44/308,892.90
  6. Step 6: Final answer
    x = 236,072.16

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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.