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Finding the Fourth Proportional to 218,791.38, 301,932.38 and 118,189.38

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Solution

The fourth proportional to 218,791.38, 301,932.38 and 118,189.38 is: 163,101.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,791.38 : 301,932.38 = 118,189.38 : x
  2. Step 2: Convert to fraction form
    218,791.38/301,932.38 = 118,189.38/x
  3. Step 3: Cross multiply
    218,791.38x = 301,932.38 × 118,189.38
  4. Step 4: Simplify right side
    218,791.38x = 35,685,200,794.12
  5. Step 5: Solve for x
    x = 35,685,200,794.12/218,791.38
  6. Step 6: Final answer
    x = 163,101.49

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1.5x scale

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.