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Finding the Fourth Proportional to 220,414.20, 330,621.30 and 54,202.20

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Solution

The fourth proportional to 220,414.20, 330,621.30 and 54,202.20 is: 81,303.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,414.20 : 330,621.30 = 54,202.20 : x
  2. Step 2: Convert to fraction form
    220,414.20/330,621.30 = 54,202.20/x
  3. Step 3: Cross multiply
    220,414.20x = 330,621.30 × 54,202.20
  4. Step 4: Simplify right side
    220,414.20x = 17,920,401,826.86
  5. Step 5: Solve for x
    x = 17,920,401,826.86/220,414.20
  6. Step 6: Final answer
    x = 81,303.30

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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.