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Finding the Fourth Proportional to 221,371.72, 305,493 and 125,884.26

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Solution

The fourth proportional to 221,371.72, 305,493 and 125,884.26 is: 173,720.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,371.72 : 305,493 = 125,884.26 : x
  2. Step 2: Convert to fraction form
    221,371.72/305,493 = 125,884.26/x
  3. Step 3: Cross multiply
    221,371.72x = 305,493 × 125,884.26
  4. Step 4: Simplify right side
    221,371.72x = 38,456,760,240.18
  5. Step 5: Solve for x
    x = 38,456,760,240.18/221,371.72
  6. Step 6: Final answer
    x = 173,720.29

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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.