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Finding the Fourth Proportional to 388,549.53, 582,857.10 and 108,066.78

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Solution

The fourth proportional to 388,549.53, 582,857.10 and 108,066.78 is: 162,109.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,549.53 : 582,857.10 = 108,066.78 : x
  2. Step 2: Convert to fraction form
    388,549.53/582,857.10 = 108,066.78/x
  3. Step 3: Cross multiply
    388,549.53x = 582,857.10 × 108,066.78
  4. Step 4: Simplify right side
    388,549.53x = 62,987,489,997.14
  5. Step 5: Solve for x
    x = 62,987,489,997.14/388,549.53
  6. Step 6: Final answer
    x = 162,109.29

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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.