Home / 324,860.12-487,142.58-100,178.72

Finding the Fourth Proportional to 324,860.12, 487,142.58 and 100,178.72

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Solution

The fourth proportional to 324,860.12, 487,142.58 and 100,178.72 is: 150,222.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,860.12 : 487,142.58 = 100,178.72 : x
  2. Step 2: Convert to fraction form
    324,860.12/487,142.58 = 100,178.72/x
  3. Step 3: Cross multiply
    324,860.12x = 487,142.58 × 100,178.72
  4. Step 4: Simplify right side
    324,860.12x = 48,801,320,121.90
  5. Step 5: Solve for x
    x = 48,801,320,121.90/324,860.12
  6. Step 6: Final answer
    x = 150,222.56

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1.5x scale

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.