Home / 228,738.26-315,680.78-126,785.78

Finding the Fourth Proportional to 228,738.26, 315,680.78 and 126,785.78

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Solution

The fourth proportional to 228,738.26, 315,680.78 and 126,785.78 is: 174,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,738.26 : 315,680.78 = 126,785.78 : x
  2. Step 2: Convert to fraction form
    228,738.26/315,680.78 = 126,785.78/x
  3. Step 3: Cross multiply
    228,738.26x = 315,680.78 × 126,785.78
  4. Step 4: Simplify right side
    228,738.26x = 40,023,834,078.58
  5. Step 5: Solve for x
    x = 40,023,834,078.58/228,738.26
  6. Step 6: Final answer
    x = 174,976.56

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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.