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Finding the Fourth Proportional to 221,067.96, 305,064 and 125,573.28

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Solution

The fourth proportional to 221,067.96, 305,064 and 125,573.28 is: 173,285.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,067.96 : 305,064 = 125,573.28 : x
  2. Step 2: Convert to fraction form
    221,067.96/305,064 = 125,573.28/x
  3. Step 3: Cross multiply
    221,067.96x = 305,064 × 125,573.28
  4. Step 4: Simplify right side
    221,067.96x = 38,307,887,089.92
  5. Step 5: Solve for x
    x = 38,307,887,089.92/221,067.96
  6. Step 6: Final answer
    x = 173,285.57

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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.