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Finding the Fourth Proportional to 221,801.70, 306,086.01 and 126,308.44

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Solution

The fourth proportional to 221,801.70, 306,086.01 and 126,308.44 is: 174,305.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,801.70 : 306,086.01 = 126,308.44 : x
  2. Step 2: Convert to fraction form
    221,801.70/306,086.01 = 126,308.44/x
  3. Step 3: Cross multiply
    221,801.70x = 306,086.01 × 126,308.44
  4. Step 4: Simplify right side
    221,801.70x = 38,661,246,428.92
  5. Step 5: Solve for x
    x = 38,661,246,428.92/221,801.70
  6. Step 6: Final answer
    x = 174,305.46

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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.