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Finding the Fourth Proportional to 220,548.35, 330,622.45 and 80,207.75

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Solution

The fourth proportional to 220,548.35, 330,622.45 and 80,207.75 is: 120,238.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,548.35 : 330,622.45 = 80,207.75 : x
  2. Step 2: Convert to fraction form
    220,548.35/330,622.45 = 80,207.75/x
  3. Step 3: Cross multiply
    220,548.35x = 330,622.45 × 80,207.75
  4. Step 4: Simplify right side
    220,548.35x = 26,518,482,813.99
  5. Step 5: Solve for x
    x = 26,518,482,813.99/220,548.35
  6. Step 6: Final answer
    x = 120,238.86

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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.