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Finding the Fourth Proportional to 206,364.18, 309,494.30 and 79,960.98

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Solution

The fourth proportional to 206,364.18, 309,494.30 and 79,960.98 is: 119,921.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,364.18 : 309,494.30 = 79,960.98 : x
  2. Step 2: Convert to fraction form
    206,364.18/309,494.30 = 79,960.98/x
  3. Step 3: Cross multiply
    206,364.18x = 309,494.30 × 79,960.98
  4. Step 4: Simplify right side
    206,364.18x = 24,747,467,132.61
  5. Step 5: Solve for x
    x = 24,747,467,132.61/206,364.18
  6. Step 6: Final answer
    x = 119,921.33

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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.