Home / 324,358.20-486,464.40-212,821.20

Finding the Fourth Proportional to 324,358.20, 486,464.40 and 212,821.20

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Solution

The fourth proportional to 324,358.20, 486,464.40 and 212,821.20 is: 319,183.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,358.20 : 486,464.40 = 212,821.20 : x
  2. Step 2: Convert to fraction form
    324,358.20/486,464.40 = 212,821.20/x
  3. Step 3: Cross multiply
    324,358.20x = 486,464.40 × 212,821.20
  4. Step 4: Simplify right side
    324,358.20x = 103,529,937,365.28
  5. Step 5: Solve for x
    x = 103,529,937,365.28/324,358.20
  6. Step 6: Final answer
    x = 319,183.97

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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.