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Finding the Fourth Proportional to 223,695.96, 308,705.57 and 126,906.30

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Solution

The fourth proportional to 223,695.96, 308,705.57 and 126,906.30 is: 175,133.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,695.96 : 308,705.57 = 126,906.30 : x
  2. Step 2: Convert to fraction form
    223,695.96/308,705.57 = 126,906.30/x
  3. Step 3: Cross multiply
    223,695.96x = 308,705.57 × 126,906.30
  4. Step 4: Simplify right side
    223,695.96x = 39,176,681,043.56
  5. Step 5: Solve for x
    x = 39,176,681,043.56/223,695.96
  6. Step 6: Final answer
    x = 175,133.61

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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.