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Finding the Fourth Proportional to 206,245.98, 309,370.34 and 79,900.26

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Solution

The fourth proportional to 206,245.98, 309,370.34 and 79,900.26 is: 119,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,245.98 : 309,370.34 = 79,900.26 : x
  2. Step 2: Convert to fraction form
    206,245.98/309,370.34 = 79,900.26/x
  3. Step 3: Cross multiply
    206,245.98x = 309,370.34 × 79,900.26
  4. Step 4: Simplify right side
    206,245.98x = 24,718,769,192.46
  5. Step 5: Solve for x
    x = 24,718,769,192.46/206,245.98
  6. Step 6: Final answer
    x = 119,850.91

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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.