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Finding the Fourth Proportional to 259,563.10, 389,016.60 and 231,350.80

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Solution

The fourth proportional to 259,563.10, 389,016.60 and 231,350.80 is: 346,733.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,563.10 : 389,016.60 = 231,350.80 : x
  2. Step 2: Convert to fraction form
    259,563.10/389,016.60 = 231,350.80/x
  3. Step 3: Cross multiply
    259,563.10x = 389,016.60 × 231,350.80
  4. Step 4: Simplify right side
    259,563.10x = 89,999,301,623.28
  5. Step 5: Solve for x
    x = 89,999,301,623.28/259,563.10
  6. Step 6: Final answer
    x = 346,733.81

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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.