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Finding the Fourth Proportional to 229,136.82, 343,623.21 and 79,336.90

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Solution

The fourth proportional to 229,136.82, 343,623.21 and 79,336.90 is: 118,976.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,136.82 : 343,623.21 = 79,336.90 : x
  2. Step 2: Convert to fraction form
    229,136.82/343,623.21 = 79,336.90/x
  3. Step 3: Cross multiply
    229,136.82x = 343,623.21 × 79,336.90
  4. Step 4: Simplify right side
    229,136.82x = 27,262,000,249.45
  5. Step 5: Solve for x
    x = 27,262,000,249.45/229,136.82
  6. Step 6: Final answer
    x = 118,976.95

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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.