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Finding the Fourth Proportional to 351,508.26, 485,078.80 and 190,359.57

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Solution

The fourth proportional to 351,508.26, 485,078.80 and 190,359.57 is: 262,694.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,508.26 : 485,078.80 = 190,359.57 : x
  2. Step 2: Convert to fraction form
    351,508.26/485,078.80 = 190,359.57/x
  3. Step 3: Cross multiply
    351,508.26x = 485,078.80 × 190,359.57
  4. Step 4: Simplify right side
    351,508.26x = 92,339,391,784.12
  5. Step 5: Solve for x
    x = 92,339,391,784.12/351,508.26
  6. Step 6: Final answer
    x = 262,694.80

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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.