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Finding the Fourth Proportional to 220,860.64, 331,287.31 and 54,648.64

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Solution

The fourth proportional to 220,860.64, 331,287.31 and 54,648.64 is: 81,972.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,860.64 : 331,287.31 = 54,648.64 : x
  2. Step 2: Convert to fraction form
    220,860.64/331,287.31 = 54,648.64/x
  3. Step 3: Cross multiply
    220,860.64x = 331,287.31 × 54,648.64
  4. Step 4: Simplify right side
    220,860.64x = 18,104,399,011.08
  5. Step 5: Solve for x
    x = 18,104,399,011.08/220,860.64
  6. Step 6: Final answer
    x = 81,972.05

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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.