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Finding the Fourth Proportional to 207,832.07, 311,297 and 127,626.61

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Solution

The fourth proportional to 207,832.07, 311,297 and 127,626.61 is: 191,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,832.07 : 311,297 = 127,626.61 : x
  2. Step 2: Convert to fraction form
    207,832.07/311,297 = 127,626.61/x
  3. Step 3: Cross multiply
    207,832.07x = 311,297 × 127,626.61
  4. Step 4: Simplify right side
    207,832.07x = 39,729,780,813.17
  5. Step 5: Solve for x
    x = 39,729,780,813.17/207,832.07
  6. Step 6: Final answer
    x = 191,162.90

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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.