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Finding the Fourth Proportional to 207,234.26, 310,851.40 and 66,992.90

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Solution

The fourth proportional to 207,234.26, 310,851.40 and 66,992.90 is: 100,489.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,234.26 : 310,851.40 = 66,992.90 : x
  2. Step 2: Convert to fraction form
    207,234.26/310,851.40 = 66,992.90/x
  3. Step 3: Cross multiply
    207,234.26x = 310,851.40 × 66,992.90
  4. Step 4: Simplify right side
    207,234.26x = 20,824,836,755.06
  5. Step 5: Solve for x
    x = 20,824,836,755.06/207,234.26
  6. Step 6: Final answer
    x = 100,489.35

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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.