Home / 439,921.12-659,873.58-140,399.32

Finding the Fourth Proportional to 439,921.12, 659,873.58 and 140,399.32

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Solution

The fourth proportional to 439,921.12, 659,873.58 and 140,399.32 is: 210,596.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,921.12 : 659,873.58 = 140,399.32 : x
  2. Step 2: Convert to fraction form
    439,921.12/659,873.58 = 140,399.32/x
  3. Step 3: Cross multiply
    439,921.12x = 659,873.58 × 140,399.32
  4. Step 4: Simplify right side
    439,921.12x = 92,645,801,917.97
  5. Step 5: Solve for x
    x = 92,645,801,917.97/439,921.12
  6. Step 6: Final answer
    x = 210,596.39

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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.