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Finding the Fourth Proportional to 300,109.97, 449,665.12 and 211,176.61

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Solution

The fourth proportional to 300,109.97, 449,665.12 and 211,176.61 is: 316,413.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,109.97 : 449,665.12 = 211,176.61 : x
  2. Step 2: Convert to fraction form
    300,109.97/449,665.12 = 211,176.61/x
  3. Step 3: Cross multiply
    300,109.97x = 449,665.12 × 211,176.61
  4. Step 4: Simplify right side
    300,109.97x = 94,958,755,676.84
  5. Step 5: Solve for x
    x = 94,958,755,676.84/300,109.97
  6. Step 6: Final answer
    x = 316,413.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.