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Finding the Fourth Proportional to 395,362.53, 545,578.68 and 231,997.04

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Solution

The fourth proportional to 395,362.53, 545,578.68 and 231,997.04 is: 320,143.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,362.53 : 545,578.68 = 231,997.04 : x
  2. Step 2: Convert to fraction form
    395,362.53/545,578.68 = 231,997.04/x
  3. Step 3: Cross multiply
    395,362.53x = 545,578.68 × 231,997.04
  4. Step 4: Simplify right side
    395,362.53x = 126,572,638,847.11
  5. Step 5: Solve for x
    x = 126,572,638,847.11/395,362.53
  6. Step 6: Final answer
    x = 320,143.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.