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Finding the Fourth Proportional to 221,608.82, 331,883.43 and 127,830.26

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Solution

The fourth proportional to 221,608.82, 331,883.43 and 127,830.26 is: 191,439.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,608.82 : 331,883.43 = 127,830.26 : x
  2. Step 2: Convert to fraction form
    221,608.82/331,883.43 = 127,830.26/x
  3. Step 3: Cross multiply
    221,608.82x = 331,883.43 × 127,830.26
  4. Step 4: Simplify right side
    221,608.82x = 42,424,745,146.59
  5. Step 5: Solve for x
    x = 42,424,745,146.59/221,608.82
  6. Step 6: Final answer
    x = 191,439.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.