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Finding the Fourth Proportional to 221,433.30, 332,149.95 and 220,121.10

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Solution

The fourth proportional to 221,433.30, 332,149.95 and 220,121.10 is: 330,181.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,433.30 : 332,149.95 = 220,121.10 : x
  2. Step 2: Convert to fraction form
    221,433.30/332,149.95 = 220,121.10/x
  3. Step 3: Cross multiply
    221,433.30x = 332,149.95 × 220,121.10
  4. Step 4: Simplify right side
    221,433.30x = 73,113,212,358.95
  5. Step 5: Solve for x
    x = 73,113,212,358.95/221,433.30
  6. Step 6: Final answer
    x = 330,181.65

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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.