Home / 309,987.20-427,845.31-179,170.45

Finding the Fourth Proportional to 309,987.20, 427,845.31 and 179,170.45

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Solution

The fourth proportional to 309,987.20, 427,845.31 and 179,170.45 is: 247,291.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,987.20 : 427,845.31 = 179,170.45 : x
  2. Step 2: Convert to fraction form
    309,987.20/427,845.31 = 179,170.45/x
  3. Step 3: Cross multiply
    309,987.20x = 427,845.31 × 179,170.45
  4. Step 4: Simplify right side
    309,987.20x = 76,657,235,205.55
  5. Step 5: Solve for x
    x = 76,657,235,205.55/309,987.20
  6. Step 6: Final answer
    x = 247,291.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.