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Finding the Fourth Proportional to 220,199.80, 330,299.70 and 190,675.30

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Solution

The fourth proportional to 220,199.80, 330,299.70 and 190,675.30 is: 286,012.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,199.80 : 330,299.70 = 190,675.30 : x
  2. Step 2: Convert to fraction form
    220,199.80/330,299.70 = 190,675.30/x
  3. Step 3: Cross multiply
    220,199.80x = 330,299.70 × 190,675.30
  4. Step 4: Simplify right side
    220,199.80x = 62,979,994,387.41
  5. Step 5: Solve for x
    x = 62,979,994,387.41/220,199.80
  6. Step 6: Final answer
    x = 286,012.95

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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.