Home / 340,920.09-511,380.11-323,872.88

Finding the Fourth Proportional to 340,920.09, 511,380.11 and 323,872.88

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Solution

The fourth proportional to 340,920.09, 511,380.11 and 323,872.88 is: 485,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,920.09 : 511,380.11 = 323,872.88 : x
  2. Step 2: Convert to fraction form
    340,920.09/511,380.11 = 323,872.88/x
  3. Step 3: Cross multiply
    340,920.09x = 511,380.11 × 323,872.88
  4. Step 4: Simplify right side
    340,920.09x = 165,622,147,780.56
  5. Step 5: Solve for x
    x = 165,622,147,780.56/340,920.09
  6. Step 6: Final answer
    x = 485,809.30

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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.