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Finding the Fourth Proportional to 220,422.20, 330,633.30 and 54,210.20

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Solution

The fourth proportional to 220,422.20, 330,633.30 and 54,210.20 is: 81,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,422.20 : 330,633.30 = 54,210.20 : x
  2. Step 2: Convert to fraction form
    220,422.20/330,633.30 = 54,210.20/x
  3. Step 3: Cross multiply
    220,422.20x = 330,633.30 × 54,210.20
  4. Step 4: Simplify right side
    220,422.20x = 17,923,697,319.66
  5. Step 5: Solve for x
    x = 17,923,697,319.66/220,422.20
  6. Step 6: Final answer
    x = 81,315.30

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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.