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Finding the Fourth Proportional to 221,798.70, 306,081.87 and 126,305.43

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Solution

The fourth proportional to 221,798.70, 306,081.87 and 126,305.43 is: 174,301.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,798.70 : 306,081.87 = 126,305.43 : x
  2. Step 2: Convert to fraction form
    221,798.70/306,081.87 = 126,305.43/x
  3. Step 3: Cross multiply
    221,798.70x = 306,081.87 × 126,305.43
  4. Step 4: Simplify right side
    221,798.70x = 38,659,802,205.55
  5. Step 5: Solve for x
    x = 38,659,802,205.55/221,798.70
  6. Step 6: Final answer
    x = 174,301.30

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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.