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Finding the Fourth Proportional to 228,702, 315,604.05 and 126,726.57

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Solution

The fourth proportional to 228,702, 315,604.05 and 126,726.57 is: 174,880.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,702 : 315,604.05 = 126,726.57 : x
  2. Step 2: Convert to fraction form
    228,702/315,604.05 = 126,726.57/x
  3. Step 3: Cross multiply
    228,702x = 315,604.05 × 126,726.57
  4. Step 4: Simplify right side
    228,702x = 39,995,418,734.61
  5. Step 5: Solve for x
    x = 39,995,418,734.61/228,702
  6. Step 6: Final answer
    x = 174,880.06

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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.