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Finding the Fourth Proportional to 208,085.80, 311,691.30 and 173,093.80

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Solution

The fourth proportional to 208,085.80, 311,691.30 and 173,093.80 is: 259,276.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,085.80 : 311,691.30 = 173,093.80 : x
  2. Step 2: Convert to fraction form
    208,085.80/311,691.30 = 173,093.80/x
  3. Step 3: Cross multiply
    208,085.80x = 311,691.30 × 173,093.80
  4. Step 4: Simplify right side
    208,085.80x = 53,951,831,543.94
  5. Step 5: Solve for x
    x = 53,951,831,543.94/208,085.80
  6. Step 6: Final answer
    x = 259,276.85

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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.