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Finding the Fourth Proportional to 230,530, 318,131.40 and 124,546

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Solution

The fourth proportional to 230,530, 318,131.40 and 124,546 is: 171,873.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,530 : 318,131.40 = 124,546 : x
  2. Step 2: Convert to fraction form
    230,530/318,131.40 = 124,546/x
  3. Step 3: Cross multiply
    230,530x = 318,131.40 × 124,546
  4. Step 4: Simplify right side
    230,530x = 39,621,993,344.40
  5. Step 5: Solve for x
    x = 39,621,993,344.40/230,530
  6. Step 6: Final answer
    x = 171,873.48

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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.