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Finding the Fourth Proportional to 247,961.70, 371,942.55 and 206,627.40

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Solution

The fourth proportional to 247,961.70, 371,942.55 and 206,627.40 is: 309,941.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,961.70 : 371,942.55 = 206,627.40 : x
  2. Step 2: Convert to fraction form
    247,961.70/371,942.55 = 206,627.40/x
  3. Step 3: Cross multiply
    247,961.70x = 371,942.55 × 206,627.40
  4. Step 4: Simplify right side
    247,961.70x = 76,853,522,055.87
  5. Step 5: Solve for x
    x = 76,853,522,055.87/247,961.70
  6. Step 6: Final answer
    x = 309,941.10

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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.