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Finding the Fourth Proportional to 408,626.89, 613,116.60 and 155,983.26

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Solution

The fourth proportional to 408,626.89, 613,116.60 and 155,983.26 is: 234,042.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,626.89 : 613,116.60 = 155,983.26 : x
  2. Step 2: Convert to fraction form
    408,626.89/613,116.60 = 155,983.26/x
  3. Step 3: Cross multiply
    408,626.89x = 613,116.60 × 155,983.26
  4. Step 4: Simplify right side
    408,626.89x = 95,635,926,028.12
  5. Step 5: Solve for x
    x = 95,635,926,028.12/408,626.89
  6. Step 6: Final answer
    x = 234,042.17

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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.