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Finding the Fourth Proportional to 206,340.65, 309,555.51 and 64,183.22

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Solution

The fourth proportional to 206,340.65, 309,555.51 and 64,183.22 is: 96,288.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,340.65 : 309,555.51 = 64,183.22 : x
  2. Step 2: Convert to fraction form
    206,340.65/309,555.51 = 64,183.22/x
  3. Step 3: Cross multiply
    206,340.65x = 309,555.51 × 64,183.22
  4. Step 4: Simplify right side
    206,340.65x = 19,868,267,852.76
  5. Step 5: Solve for x
    x = 19,868,267,852.76/206,340.65
  6. Step 6: Final answer
    x = 96,288.68

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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.