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Finding the Fourth Proportional to 219,424.40, 329,136.60 and 203,021.90

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Solution

The fourth proportional to 219,424.40, 329,136.60 and 203,021.90 is: 304,532.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,424.40 : 329,136.60 = 203,021.90 : x
  2. Step 2: Convert to fraction form
    219,424.40/329,136.60 = 203,021.90/x
  3. Step 3: Cross multiply
    219,424.40x = 329,136.60 × 203,021.90
  4. Step 4: Simplify right side
    219,424.40x = 66,821,937,891.54
  5. Step 5: Solve for x
    x = 66,821,937,891.54/219,424.40
  6. Step 6: Final answer
    x = 304,532.85

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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.