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Finding the Fourth Proportional to 219,490.85, 329,236.40 and 61,719.30

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Solution

The fourth proportional to 219,490.85, 329,236.40 and 61,719.30 is: 92,578.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,490.85 : 329,236.40 = 61,719.30 : x
  2. Step 2: Convert to fraction form
    219,490.85/329,236.40 = 61,719.30/x
  3. Step 3: Cross multiply
    219,490.85x = 329,236.40 × 61,719.30
  4. Step 4: Simplify right side
    219,490.85x = 20,320,240,296.82
  5. Step 5: Solve for x
    x = 20,320,240,296.82/219,490.85
  6. Step 6: Final answer
    x = 92,578.98

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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.