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Finding the Fourth Proportional to 206,207.60, 309,311.40 and 101,231.60

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Solution

The fourth proportional to 206,207.60, 309,311.40 and 101,231.60 is: 151,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,207.60 : 309,311.40 = 101,231.60 : x
  2. Step 2: Convert to fraction form
    206,207.60/309,311.40 = 101,231.60/x
  3. Step 3: Cross multiply
    206,207.60x = 309,311.40 × 101,231.60
  4. Step 4: Simplify right side
    206,207.60x = 31,312,087,920.24
  5. Step 5: Solve for x
    x = 31,312,087,920.24/206,207.60
  6. Step 6: Final answer
    x = 151,847.40

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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.