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Finding the Fourth Proportional to 343,755.30, 515,195.55 and 165,879.30

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Solution

The fourth proportional to 343,755.30, 515,195.55 and 165,879.30 is: 248,607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,755.30 : 515,195.55 = 165,879.30 : x
  2. Step 2: Convert to fraction form
    343,755.30/515,195.55 = 165,879.30/x
  3. Step 3: Cross multiply
    343,755.30x = 515,195.55 × 165,879.30
  4. Step 4: Simplify right side
    343,755.30x = 85,460,277,197.12
  5. Step 5: Solve for x
    x = 85,460,277,197.12/343,755.30
  6. Step 6: Final answer
    x = 248,607.88

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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.