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Finding the Fourth Proportional to 382,906.79, 528,402.61 and 239,745.77

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Solution

The fourth proportional to 382,906.79, 528,402.61 and 239,745.77 is: 330,843.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,906.79 : 528,402.61 = 239,745.77 : x
  2. Step 2: Convert to fraction form
    382,906.79/528,402.61 = 239,745.77/x
  3. Step 3: Cross multiply
    382,906.79x = 528,402.61 × 239,745.77
  4. Step 4: Simplify right side
    382,906.79x = 126,682,290,604.46
  5. Step 5: Solve for x
    x = 126,682,290,604.46/382,906.79
  6. Step 6: Final answer
    x = 330,843.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.