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Finding the Fourth Proportional to 266,838.54, 400,257.84 and 126,520.62

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Solution

The fourth proportional to 266,838.54, 400,257.84 and 126,520.62 is: 189,780.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,838.54 : 400,257.84 = 126,520.62 : x
  2. Step 2: Convert to fraction form
    266,838.54/400,257.84 = 126,520.62/x
  3. Step 3: Cross multiply
    266,838.54x = 400,257.84 × 126,520.62
  4. Step 4: Simplify right side
    266,838.54x = 50,640,870,076.66
  5. Step 5: Solve for x
    x = 50,640,870,076.66/266,838.54
  6. Step 6: Final answer
    x = 189,780.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.