Home / 431,380.74-647,075.25-115,837.68

Finding the Fourth Proportional to 431,380.74, 647,075.25 and 115,837.68

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Solution

The fourth proportional to 431,380.74, 647,075.25 and 115,837.68 is: 173,757.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,380.74 : 647,075.25 = 115,837.68 : x
  2. Step 2: Convert to fraction form
    431,380.74/647,075.25 = 115,837.68/x
  3. Step 3: Cross multiply
    431,380.74x = 647,075.25 × 115,837.68
  4. Step 4: Simplify right side
    431,380.74x = 74,955,695,745.42
  5. Step 5: Solve for x
    x = 74,955,695,745.42/431,380.74
  6. Step 6: Final answer
    x = 173,757.63

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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.