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Finding the Fourth Proportional to 221,655.87, 305,885.44 and 126,162.56

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Solution

The fourth proportional to 221,655.87, 305,885.44 and 126,162.56 is: 174,104.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,655.87 : 305,885.44 = 126,162.56 : x
  2. Step 2: Convert to fraction form
    221,655.87/305,885.44 = 126,162.56/x
  3. Step 3: Cross multiply
    221,655.87x = 305,885.44 × 126,162.56
  4. Step 4: Simplify right side
    221,655.87x = 38,591,290,744.71
  5. Step 5: Solve for x
    x = 38,591,290,744.71/221,655.87
  6. Step 6: Final answer
    x = 174,104.53

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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.