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Finding the Fourth Proportional to 216,979.38, 325,485.46 and 67,234.78

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Solution

The fourth proportional to 216,979.38, 325,485.46 and 67,234.78 is: 100,857.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,979.38 : 325,485.46 = 67,234.78 : x
  2. Step 2: Convert to fraction form
    216,979.38/325,485.46 = 67,234.78/x
  3. Step 3: Cross multiply
    216,979.38x = 325,485.46 × 67,234.78
  4. Step 4: Simplify right side
    216,979.38x = 21,883,943,296.30
  5. Step 5: Solve for x
    x = 21,883,943,296.30/216,979.38
  6. Step 6: Final answer
    x = 100,857.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.