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Finding the Fourth Proportional to 275,426.31, 379,992.63 and 173,460.17

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Solution

The fourth proportional to 275,426.31, 379,992.63 and 173,460.17 is: 239,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,426.31 : 379,992.63 = 173,460.17 : x
  2. Step 2: Convert to fraction form
    275,426.31/379,992.63 = 173,460.17/x
  3. Step 3: Cross multiply
    275,426.31x = 379,992.63 × 173,460.17
  4. Step 4: Simplify right side
    275,426.31x = 65,913,586,198.55
  5. Step 5: Solve for x
    x = 65,913,586,198.55/275,426.31
  6. Step 6: Final answer
    x = 239,314.78

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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.