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Finding the Fourth Proportional to 228,858.09, 315,856.85 and 126,906.22

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Solution

The fourth proportional to 228,858.09, 315,856.85 and 126,906.22 is: 175,148.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,858.09 : 315,856.85 = 126,906.22 : x
  2. Step 2: Convert to fraction form
    228,858.09/315,856.85 = 126,906.22/x
  3. Step 3: Cross multiply
    228,858.09x = 315,856.85 × 126,906.22
  4. Step 4: Simplify right side
    228,858.09x = 40,084,198,894.61
  5. Step 5: Solve for x
    x = 40,084,198,894.61/228,858.09
  6. Step 6: Final answer
    x = 175,148.71

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1.5x scale

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.