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Finding the Fourth Proportional to 271,999.80, 408,086.10 and 122,182.20

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Solution

The fourth proportional to 271,999.80, 408,086.10 and 122,182.20 is: 183,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,999.80 : 408,086.10 = 122,182.20 : x
  2. Step 2: Convert to fraction form
    271,999.80/408,086.10 = 122,182.20/x
  3. Step 3: Cross multiply
    271,999.80x = 408,086.10 × 122,182.20
  4. Step 4: Simplify right side
    271,999.80x = 49,860,857,487.42
  5. Step 5: Solve for x
    x = 49,860,857,487.42/271,999.80
  6. Step 6: Final answer
    x = 183,312.11

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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.