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Finding the Fourth Proportional to 219,759.78, 329,593.50 and 61,945.86

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Solution

The fourth proportional to 219,759.78, 329,593.50 and 61,945.86 is: 92,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,759.78 : 329,593.50 = 61,945.86 : x
  2. Step 2: Convert to fraction form
    219,759.78/329,593.50 = 61,945.86/x
  3. Step 3: Cross multiply
    219,759.78x = 329,593.50 × 61,945.86
  4. Step 4: Simplify right side
    219,759.78x = 20,416,952,807.91
  5. Step 5: Solve for x
    x = 20,416,952,807.91/219,759.78
  6. Step 6: Final answer
    x = 92,905.78

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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.