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Finding the Fourth Proportional to 206,608.20, 309,912.30 and 206,608.20

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Solution

The fourth proportional to 206,608.20, 309,912.30 and 206,608.20 is: 309,912.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,608.20 : 309,912.30 = 206,608.20 : x
  2. Step 2: Convert to fraction form
    206,608.20/309,912.30 = 206,608.20/x
  3. Step 3: Cross multiply
    206,608.20x = 309,912.30 × 206,608.20
  4. Step 4: Simplify right side
    206,608.20x = 64,030,422,460.86
  5. Step 5: Solve for x
    x = 64,030,422,460.86/206,608.20
  6. Step 6: Final answer
    x = 309,912.30

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1.5x scale

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.