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Finding the Fourth Proportional to 221,130.84, 331,592.52 and 80,791.32

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Solution

The fourth proportional to 221,130.84, 331,592.52 and 80,791.32 is: 121,149.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,130.84 : 331,592.52 = 80,791.32 : x
  2. Step 2: Convert to fraction form
    221,130.84/331,592.52 = 80,791.32/x
  3. Step 3: Cross multiply
    221,130.84x = 331,592.52 × 80,791.32
  4. Step 4: Simplify right side
    221,130.84x = 26,789,797,392.93
  5. Step 5: Solve for x
    x = 26,789,797,392.93/221,130.84
  6. Step 6: Final answer
    x = 121,149.08

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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.