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Finding the Fourth Proportional to 319,725.91, 441,254.13 and 274,553.44

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Solution

The fourth proportional to 319,725.91, 441,254.13 and 274,553.44 is: 378,911.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,725.91 : 441,254.13 = 274,553.44 : x
  2. Step 2: Convert to fraction form
    319,725.91/441,254.13 = 274,553.44/x
  3. Step 3: Cross multiply
    319,725.91x = 441,254.13 × 274,553.44
  4. Step 4: Simplify right side
    319,725.91x = 121,147,839,305.71
  5. Step 5: Solve for x
    x = 121,147,839,305.71/319,725.91
  6. Step 6: Final answer
    x = 378,911.55

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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.