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Finding the Fourth Proportional to 352,530, 486,491.40 and 193,554

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Solution

The fourth proportional to 352,530, 486,491.40 and 193,554 is: 267,104.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,530 : 486,491.40 = 193,554 : x
  2. Step 2: Convert to fraction form
    352,530/486,491.40 = 193,554/x
  3. Step 3: Cross multiply
    352,530x = 486,491.40 × 193,554
  4. Step 4: Simplify right side
    352,530x = 94,162,356,435.60
  5. Step 5: Solve for x
    x = 94,162,356,435.60/352,530
  6. Step 6: Final answer
    x = 267,104.52

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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.