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Finding the Fourth Proportional to 228,220.76, 314,920.36 and 126,230

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Solution

The fourth proportional to 228,220.76, 314,920.36 and 126,230 is: 174,183.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,220.76 : 314,920.36 = 126,230 : x
  2. Step 2: Convert to fraction form
    228,220.76/314,920.36 = 126,230/x
  3. Step 3: Cross multiply
    228,220.76x = 314,920.36 × 126,230
  4. Step 4: Simplify right side
    228,220.76x = 39,752,397,042.80
  5. Step 5: Solve for x
    x = 39,752,397,042.80/228,220.76
  6. Step 6: Final answer
    x = 174,183.97

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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.