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Finding the Fourth Proportional to 339,214.35, 508,835.36 and 86,501.39

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Solution

The fourth proportional to 339,214.35, 508,835.36 and 86,501.39 is: 129,755.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,214.35 : 508,835.36 = 86,501.39 : x
  2. Step 2: Convert to fraction form
    339,214.35/508,835.36 = 86,501.39/x
  3. Step 3: Cross multiply
    339,214.35x = 508,835.36 × 86,501.39
  4. Step 4: Simplify right side
    339,214.35x = 44,014,965,921.15
  5. Step 5: Solve for x
    x = 44,014,965,921.15/339,214.35
  6. Step 6: Final answer
    x = 129,755.61

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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.