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Finding the Fourth Proportional to 221,600.88, 305,844.39 and 126,138.33

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Solution

The fourth proportional to 221,600.88, 305,844.39 and 126,138.33 is: 174,090.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,600.88 : 305,844.39 = 126,138.33 : x
  2. Step 2: Convert to fraction form
    221,600.88/305,844.39 = 126,138.33/x
  3. Step 3: Cross multiply
    221,600.88x = 305,844.39 × 126,138.33
  4. Step 4: Simplify right side
    221,600.88x = 38,578,700,594.47
  5. Step 5: Solve for x
    x = 38,578,700,594.47/221,600.88
  6. Step 6: Final answer
    x = 174,090.92

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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.