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Finding the Fourth Proportional to 415,234.20, 622,620.90 and 165,634.20

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Solution

The fourth proportional to 415,234.20, 622,620.90 and 165,634.20 is: 248,359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,234.20 : 622,620.90 = 165,634.20 : x
  2. Step 2: Convert to fraction form
    415,234.20/622,620.90 = 165,634.20/x
  3. Step 3: Cross multiply
    415,234.20x = 622,620.90 × 165,634.20
  4. Step 4: Simplify right side
    415,234.20x = 103,127,314,674.78
  5. Step 5: Solve for x
    x = 103,127,314,674.78/415,234.20
  6. Step 6: Final answer
    x = 248,359.39

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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.