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Finding the Fourth Proportional to 208,137.30, 311,768.55 and 173,145.30

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Solution

The fourth proportional to 208,137.30, 311,768.55 and 173,145.30 is: 259,354.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,137.30 : 311,768.55 = 173,145.30 : x
  2. Step 2: Convert to fraction form
    208,137.30/311,768.55 = 173,145.30/x
  3. Step 3: Cross multiply
    208,137.30x = 311,768.55 × 173,145.30
  4. Step 4: Simplify right side
    208,137.30x = 53,981,259,120.32
  5. Step 5: Solve for x
    x = 53,981,259,120.32/208,137.30
  6. Step 6: Final answer
    x = 259,354.09

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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.