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Finding the Fourth Proportional to 228,974.30, 343,301.45 and 135,431.90

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Solution

The fourth proportional to 228,974.30, 343,301.45 and 135,431.90 is: 203,053.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,974.30 : 343,301.45 = 135,431.90 : x
  2. Step 2: Convert to fraction form
    228,974.30/343,301.45 = 135,431.90/x
  3. Step 3: Cross multiply
    228,974.30x = 343,301.45 × 135,431.90
  4. Step 4: Simplify right side
    228,974.30x = 46,493,967,646.26
  5. Step 5: Solve for x
    x = 46,493,967,646.26/228,974.30
  6. Step 6: Final answer
    x = 203,053.21

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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.