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Finding the Fourth Proportional to 220,216.80, 330,325.20 and 79,957.20

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Solution

The fourth proportional to 220,216.80, 330,325.20 and 79,957.20 is: 119,935.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,216.80 : 330,325.20 = 79,957.20 : x
  2. Step 2: Convert to fraction form
    220,216.80/330,325.20 = 79,957.20/x
  3. Step 3: Cross multiply
    220,216.80x = 330,325.20 × 79,957.20
  4. Step 4: Simplify right side
    220,216.80x = 26,411,878,081.44
  5. Step 5: Solve for x
    x = 26,411,878,081.44/220,216.80
  6. Step 6: Final answer
    x = 119,935.80

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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.