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Finding the Fourth Proportional to 324,336.40, 486,067.20 and 217,416.40

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Solution

The fourth proportional to 324,336.40, 486,067.20 and 217,416.40 is: 325,831.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,336.40 : 486,067.20 = 217,416.40 : x
  2. Step 2: Convert to fraction form
    324,336.40/486,067.20 = 217,416.40/x
  3. Step 3: Cross multiply
    324,336.40x = 486,067.20 × 217,416.40
  4. Step 4: Simplify right side
    324,336.40x = 105,678,980,782.08
  5. Step 5: Solve for x
    x = 105,678,980,782.08/324,336.40
  6. Step 6: Final answer
    x = 325,831.39

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.