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Finding the Fourth Proportional to 218,246.78, 301,179.38 and 122,751.42

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Solution

The fourth proportional to 218,246.78, 301,179.38 and 122,751.42 is: 169,396.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,246.78 : 301,179.38 = 122,751.42 : x
  2. Step 2: Convert to fraction form
    218,246.78/301,179.38 = 122,751.42/x
  3. Step 3: Cross multiply
    218,246.78x = 301,179.38 × 122,751.42
  4. Step 4: Simplify right side
    218,246.78x = 36,970,196,569.72
  5. Step 5: Solve for x
    x = 36,970,196,569.72/218,246.78
  6. Step 6: Final answer
    x = 169,396.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.