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Finding the Fourth Proportional to 259,161.78, 388,741.12 and 67,036.22

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Solution

The fourth proportional to 259,161.78, 388,741.12 and 67,036.22 is: 100,553.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,161.78 : 388,741.12 = 67,036.22 : x
  2. Step 2: Convert to fraction form
    259,161.78/388,741.12 = 67,036.22/x
  3. Step 3: Cross multiply
    259,161.78x = 388,741.12 × 67,036.22
  4. Step 4: Simplify right side
    259,161.78x = 26,059,735,243.37
  5. Step 5: Solve for x
    x = 26,059,735,243.37/259,161.78
  6. Step 6: Final answer
    x = 100,553.93

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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.