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Finding the Fourth Proportional to 218,450.78, 327,566.57 and 127,295.72

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Solution

The fourth proportional to 218,450.78, 327,566.57 and 127,295.72 is: 190,879.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,450.78 : 327,566.57 = 127,295.72 : x
  2. Step 2: Convert to fraction form
    218,450.78/327,566.57 = 127,295.72/x
  3. Step 3: Cross multiply
    218,450.78x = 327,566.57 × 127,295.72
  4. Step 4: Simplify right side
    218,450.78x = 41,697,820,738.25
  5. Step 5: Solve for x
    x = 41,697,820,738.25/218,450.78
  6. Step 6: Final answer
    x = 190,879.71

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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.