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Finding the Fourth Proportional to 206,466.60, 309,930.30 and 192,930.60

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Solution

The fourth proportional to 206,466.60, 309,930.30 and 192,930.60 is: 289,611.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,466.60 : 309,930.30 = 192,930.60 : x
  2. Step 2: Convert to fraction form
    206,466.60/309,930.30 = 192,930.60/x
  3. Step 3: Cross multiply
    206,466.60x = 309,930.30 × 192,930.60
  4. Step 4: Simplify right side
    206,466.60x = 59,795,038,737.18
  5. Step 5: Solve for x
    x = 59,795,038,737.18/206,466.60
  6. Step 6: Final answer
    x = 289,611.19

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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.