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Finding the Fourth Proportional to 228,701.75, 315,603.70 and 126,726.32

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Solution

The fourth proportional to 228,701.75, 315,603.70 and 126,726.32 is: 174,879.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,701.75 : 315,603.70 = 126,726.32 : x
  2. Step 2: Convert to fraction form
    228,701.75/315,603.70 = 126,726.32/x
  3. Step 3: Cross multiply
    228,701.75x = 315,603.70 × 126,726.32
  4. Step 4: Simplify right side
    228,701.75x = 39,995,295,951.58
  5. Step 5: Solve for x
    x = 39,995,295,951.58/228,701.75
  6. Step 6: Final answer
    x = 174,879.71

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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.