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Finding the Fourth Proportional to 217,169.10, 325,753.65 and 209,295.90

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Solution

The fourth proportional to 217,169.10, 325,753.65 and 209,295.90 is: 313,943.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,169.10 : 325,753.65 = 209,295.90 : x
  2. Step 2: Convert to fraction form
    217,169.10/325,753.65 = 209,295.90/x
  3. Step 3: Cross multiply
    217,169.10x = 325,753.65 × 209,295.90
  4. Step 4: Simplify right side
    217,169.10x = 68,178,903,355.04
  5. Step 5: Solve for x
    x = 68,178,903,355.04/217,169.10
  6. Step 6: Final answer
    x = 313,943.85

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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.