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Finding the Fourth Proportional to 220,164.80, 330,247.20 and 218,782.40

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Solution

The fourth proportional to 220,164.80, 330,247.20 and 218,782.40 is: 328,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,164.80 : 330,247.20 = 218,782.40 : x
  2. Step 2: Convert to fraction form
    220,164.80/330,247.20 = 218,782.40/x
  3. Step 3: Cross multiply
    220,164.80x = 330,247.20 × 218,782.40
  4. Step 4: Simplify right side
    220,164.80x = 72,252,275,009.28
  5. Step 5: Solve for x
    x = 72,252,275,009.28/220,164.80
  6. Step 6: Final answer
    x = 328,173.60

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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.