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Finding the Fourth Proportional to 259,832.61, 389,744.81 and 215,365.43

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Solution

The fourth proportional to 259,832.61, 389,744.81 and 215,365.43 is: 323,044.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,832.61 : 389,744.81 = 215,365.43 : x
  2. Step 2: Convert to fraction form
    259,832.61/389,744.81 = 215,365.43/x
  3. Step 3: Cross multiply
    259,832.61x = 389,744.81 × 215,365.43
  4. Step 4: Simplify right side
    259,832.61x = 83,937,560,512.50
  5. Step 5: Solve for x
    x = 83,937,560,512.50/259,832.61
  6. Step 6: Final answer
    x = 323,044.75

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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.