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Finding the Fourth Proportional to 220,120.40, 330,161.40 and 72,376.40

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Solution

The fourth proportional to 220,120.40, 330,161.40 and 72,376.40 is: 108,558.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,120.40 : 330,161.40 = 72,376.40 : x
  2. Step 2: Convert to fraction form
    220,120.40/330,161.40 = 72,376.40/x
  3. Step 3: Cross multiply
    220,120.40x = 330,161.40 × 72,376.40
  4. Step 4: Simplify right side
    220,120.40x = 23,895,893,550.96
  5. Step 5: Solve for x
    x = 23,895,893,550.96/220,120.40
  6. Step 6: Final answer
    x = 108,558.29

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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.