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Finding the Fourth Proportional to 219,228.72, 328,817.34 and 61,469.88

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Solution

The fourth proportional to 219,228.72, 328,817.34 and 61,469.88 is: 92,197.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,228.72 : 328,817.34 = 61,469.88 : x
  2. Step 2: Convert to fraction form
    219,228.72/328,817.34 = 61,469.88/x
  3. Step 3: Cross multiply
    219,228.72x = 328,817.34 × 61,469.88
  4. Step 4: Simplify right side
    219,228.72x = 20,212,362,431.72
  5. Step 5: Solve for x
    x = 20,212,362,431.72/219,228.72
  6. Step 6: Final answer
    x = 92,197.60

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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.