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Finding the Fourth Proportional to 220,555.40, 330,833.10 and 200,216.30

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Solution

The fourth proportional to 220,555.40, 330,833.10 and 200,216.30 is: 300,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,555.40 : 330,833.10 = 200,216.30 : x
  2. Step 2: Convert to fraction form
    220,555.40/330,833.10 = 200,216.30/x
  3. Step 3: Cross multiply
    220,555.40x = 330,833.10 × 200,216.30
  4. Step 4: Simplify right side
    220,555.40x = 66,238,179,199.53
  5. Step 5: Solve for x
    x = 66,238,179,199.53/220,555.40
  6. Step 6: Final answer
    x = 300,324.45

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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.