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Finding the Fourth Proportional to 219,035.20, 328,552.80 and 196,916.80

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Solution

The fourth proportional to 219,035.20, 328,552.80 and 196,916.80 is: 295,375.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,035.20 : 328,552.80 = 196,916.80 : x
  2. Step 2: Convert to fraction form
    219,035.20/328,552.80 = 196,916.80/x
  3. Step 3: Cross multiply
    219,035.20x = 328,552.80 × 196,916.80
  4. Step 4: Simplify right side
    219,035.20x = 64,697,566,007.04
  5. Step 5: Solve for x
    x = 64,697,566,007.04/219,035.20
  6. Step 6: Final answer
    x = 295,375.20

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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.