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Finding the Fourth Proportional to 324,007.20, 486,529.20 and 219,290.40

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Solution

The fourth proportional to 324,007.20, 486,529.20 and 219,290.40 is: 329,286.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,007.20 : 486,529.20 = 219,290.40 : x
  2. Step 2: Convert to fraction form
    324,007.20/486,529.20 = 219,290.40/x
  3. Step 3: Cross multiply
    324,007.20x = 486,529.20 × 219,290.40
  4. Step 4: Simplify right side
    324,007.20x = 106,691,182,879.68
  5. Step 5: Solve for x
    x = 106,691,182,879.68/324,007.20
  6. Step 6: Final answer
    x = 329,286.46

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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.