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Finding the Fourth Proportional to 228,839.25, 315,816.81 and 126,896.67

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Solution

The fourth proportional to 228,839.25, 315,816.81 and 126,896.67 is: 175,127.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,839.25 : 315,816.81 = 126,896.67 : x
  2. Step 2: Convert to fraction form
    228,839.25/315,816.81 = 126,896.67/x
  3. Step 3: Cross multiply
    228,839.25x = 315,816.81 × 126,896.67
  4. Step 4: Simplify right side
    228,839.25x = 40,076,100,884.54
  5. Step 5: Solve for x
    x = 40,076,100,884.54/228,839.25
  6. Step 6: Final answer
    x = 175,127.74

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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.