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Finding the Fourth Proportional to 259,327.72, 389,145.66 and 111,583.72

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Solution

The fourth proportional to 259,327.72, 389,145.66 and 111,583.72 is: 167,441.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,327.72 : 389,145.66 = 111,583.72 : x
  2. Step 2: Convert to fraction form
    259,327.72/389,145.66 = 111,583.72/x
  3. Step 3: Cross multiply
    259,327.72x = 389,145.66 × 111,583.72
  4. Step 4: Simplify right side
    259,327.72x = 43,422,320,364.66
  5. Step 5: Solve for x
    x = 43,422,320,364.66/259,327.72
  6. Step 6: Final answer
    x = 167,441.88

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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.