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Finding the Fourth Proportional to 230,538.38, 318,145.39 and 129,936.38

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Solution

The fourth proportional to 230,538.38, 318,145.39 and 129,936.38 is: 179,313.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,538.38 : 318,145.39 = 129,936.38 : x
  2. Step 2: Convert to fraction form
    230,538.38/318,145.39 = 129,936.38/x
  3. Step 3: Cross multiply
    230,538.38x = 318,145.39 × 129,936.38
  4. Step 4: Simplify right side
    230,538.38x = 41,338,658,374.72
  5. Step 5: Solve for x
    x = 41,338,658,374.72/230,538.38
  6. Step 6: Final answer
    x = 179,313.57

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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.