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Finding the Fourth Proportional to 219,181.80, 328,116.60 and 206,205.60

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Solution

The fourth proportional to 219,181.80, 328,116.60 and 206,205.60 is: 308,691.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,181.80 : 328,116.60 = 206,205.60 : x
  2. Step 2: Convert to fraction form
    219,181.80/328,116.60 = 206,205.60/x
  3. Step 3: Cross multiply
    219,181.80x = 328,116.60 × 206,205.60
  4. Step 4: Simplify right side
    219,181.80x = 67,659,480,372.96
  5. Step 5: Solve for x
    x = 67,659,480,372.96/219,181.80
  6. Step 6: Final answer
    x = 308,691.14

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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.