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Finding the Fourth Proportional to 324,016.80, 485,782.20 and 166,358.40

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Solution

The fourth proportional to 324,016.80, 485,782.20 and 166,358.40 is: 249,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,016.80 : 485,782.20 = 166,358.40 : x
  2. Step 2: Convert to fraction form
    324,016.80/485,782.20 = 166,358.40/x
  3. Step 3: Cross multiply
    324,016.80x = 485,782.20 × 166,358.40
  4. Step 4: Simplify right side
    324,016.80x = 80,813,949,540.48
  5. Step 5: Solve for x
    x = 80,813,949,540.48/324,016.80
  6. Step 6: Final answer
    x = 249,412.84

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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.