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Finding the Fourth Proportional to 220,435.85, 330,377.11 and 119,229.84

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Solution

The fourth proportional to 220,435.85, 330,377.11 and 119,229.84 is: 178,695.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,435.85 : 330,377.11 = 119,229.84 : x
  2. Step 2: Convert to fraction form
    220,435.85/330,377.11 = 119,229.84/x
  3. Step 3: Cross multiply
    220,435.85x = 330,377.11 × 119,229.84
  4. Step 4: Simplify right side
    220,435.85x = 39,390,809,666.89
  5. Step 5: Solve for x
    x = 39,390,809,666.89/220,435.85
  6. Step 6: Final answer
    x = 178,695.11

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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.