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Finding the Fourth Proportional to 408,673.08, 611,828.64 and 259,082.28

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Solution

The fourth proportional to 408,673.08, 611,828.64 and 259,082.28 is: 387,874.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,673.08 : 611,828.64 = 259,082.28 : x
  2. Step 2: Convert to fraction form
    408,673.08/611,828.64 = 259,082.28/x
  3. Step 3: Cross multiply
    408,673.08x = 611,828.64 × 259,082.28
  4. Step 4: Simplify right side
    408,673.08x = 158,513,959,020.50
  5. Step 5: Solve for x
    x = 158,513,959,020.50/408,673.08
  6. Step 6: Final answer
    x = 387,874.73

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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.