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Finding the Fourth Proportional to 339,053.52, 508,745.52 and 139,433.88

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Solution

The fourth proportional to 339,053.52, 508,745.52 and 139,433.88 is: 209,218.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,053.52 : 508,745.52 = 139,433.88 : x
  2. Step 2: Convert to fraction form
    339,053.52/508,745.52 = 139,433.88/x
  3. Step 3: Cross multiply
    339,053.52x = 508,745.52 × 139,433.88
  4. Step 4: Simplify right side
    339,053.52x = 70,936,361,786.22
  5. Step 5: Solve for x
    x = 70,936,361,786.22/339,053.52
  6. Step 6: Final answer
    x = 209,218.77

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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.