Home / 321,400.86-482,105.07-121,667.55

Finding the Fourth Proportional to 321,400.86, 482,105.07 and 121,667.55

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Solution

The fourth proportional to 321,400.86, 482,105.07 and 121,667.55 is: 182,502.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,400.86 : 482,105.07 = 121,667.55 : x
  2. Step 2: Convert to fraction form
    321,400.86/482,105.07 = 121,667.55/x
  3. Step 3: Cross multiply
    321,400.86x = 482,105.07 × 121,667.55
  4. Step 4: Simplify right side
    321,400.86x = 58,656,542,709.48
  5. Step 5: Solve for x
    x = 58,656,542,709.48/321,400.86
  6. Step 6: Final answer
    x = 182,502.76

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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.