Home / 220,220.80-330,331.20-218,908.60

Finding the Fourth Proportional to 220,220.80, 330,331.20 and 218,908.60

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Solution

The fourth proportional to 220,220.80, 330,331.20 and 218,908.60 is: 328,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,220.80 : 330,331.20 = 218,908.60 : x
  2. Step 2: Convert to fraction form
    220,220.80/330,331.20 = 218,908.60/x
  3. Step 3: Cross multiply
    220,220.80x = 330,331.20 × 218,908.60
  4. Step 4: Simplify right side
    220,220.80x = 72,312,340,528.32
  5. Step 5: Solve for x
    x = 72,312,340,528.32/220,220.80
  6. Step 6: Final answer
    x = 328,362.90

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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.