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Finding the Fourth Proportional to 339,285.17, 508,945.28 and 86,567.87

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Solution

The fourth proportional to 339,285.17, 508,945.28 and 86,567.87 is: 129,856.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,285.17 : 508,945.28 = 86,567.87 : x
  2. Step 2: Convert to fraction form
    339,285.17/508,945.28 = 86,567.87/x
  3. Step 3: Cross multiply
    339,285.17x = 508,945.28 × 86,567.87
  4. Step 4: Simplify right side
    339,285.17x = 44,058,309,675.68
  5. Step 5: Solve for x
    x = 44,058,309,675.68/339,285.17
  6. Step 6: Final answer
    x = 129,856.28

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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.