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Finding the Fourth Proportional to 219,709.70, 329,564.55 and 131,063.30

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Solution

The fourth proportional to 219,709.70, 329,564.55 and 131,063.30 is: 196,594.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,709.70 : 329,564.55 = 131,063.30 : x
  2. Step 2: Convert to fraction form
    219,709.70/329,564.55 = 131,063.30/x
  3. Step 3: Cross multiply
    219,709.70x = 329,564.55 × 131,063.30
  4. Step 4: Simplify right side
    219,709.70x = 43,193,817,486.02
  5. Step 5: Solve for x
    x = 43,193,817,486.02/219,709.70
  6. Step 6: Final answer
    x = 196,594.95

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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.