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Finding the Fourth Proportional to 219,490.72, 329,236.23 and 61,719.19

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Solution

The fourth proportional to 219,490.72, 329,236.23 and 61,719.19 is: 92,578.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,490.72 : 329,236.23 = 61,719.19 : x
  2. Step 2: Convert to fraction form
    219,490.72/329,236.23 = 61,719.19/x
  3. Step 3: Cross multiply
    219,490.72x = 329,236.23 × 61,719.19
  4. Step 4: Simplify right side
    219,490.72x = 20,320,193,434.25
  5. Step 5: Solve for x
    x = 20,320,193,434.25/219,490.72
  6. Step 6: Final answer
    x = 92,578.83

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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.