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Finding the Fourth Proportional to 315,755.49, 473,860.13 and 126,107.15

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Solution

The fourth proportional to 315,755.49, 473,860.13 and 126,107.15 is: 189,251.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,755.49 : 473,860.13 = 126,107.15 : x
  2. Step 2: Convert to fraction form
    315,755.49/473,860.13 = 126,107.15/x
  3. Step 3: Cross multiply
    315,755.49x = 473,860.13 × 126,107.15
  4. Step 4: Simplify right side
    315,755.49x = 59,757,147,493.09
  5. Step 5: Solve for x
    x = 59,757,147,493.09/315,755.49
  6. Step 6: Final answer
    x = 189,251.33

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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.