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Finding the Fourth Proportional to 220,427.09, 330,734.26 and 120,470.52

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Solution

The fourth proportional to 220,427.09, 330,734.26 and 120,470.52 is: 180,756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,427.09 : 330,734.26 = 120,470.52 : x
  2. Step 2: Convert to fraction form
    220,427.09/330,734.26 = 120,470.52/x
  3. Step 3: Cross multiply
    220,427.09x = 330,734.26 × 120,470.52
  4. Step 4: Simplify right side
    220,427.09x = 39,843,727,194.35
  5. Step 5: Solve for x
    x = 39,843,727,194.35/220,427.09
  6. Step 6: Final answer
    x = 180,756.94

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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.