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Finding the Fourth Proportional to 220,571.25, 330,856.88 and 54,359.25

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Solution

The fourth proportional to 220,571.25, 330,856.88 and 54,359.25 is: 81,538.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,571.25 : 330,856.88 = 54,359.25 : x
  2. Step 2: Convert to fraction form
    220,571.25/330,856.88 = 54,359.25/x
  3. Step 3: Cross multiply
    220,571.25x = 330,856.88 × 54,359.25
  4. Step 4: Simplify right side
    220,571.25x = 17,985,131,582.34
  5. Step 5: Solve for x
    x = 17,985,131,582.34/220,571.25
  6. Step 6: Final answer
    x = 81,538.88

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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.