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Finding the Fourth Proportional to 333,012.80, 499,519.20 and 220,819.70

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Solution

The fourth proportional to 333,012.80, 499,519.20 and 220,819.70 is: 331,229.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,012.80 : 499,519.20 = 220,819.70 : x
  2. Step 2: Convert to fraction form
    333,012.80/499,519.20 = 220,819.70/x
  3. Step 3: Cross multiply
    333,012.80x = 499,519.20 × 220,819.70
  4. Step 4: Simplify right side
    333,012.80x = 110,303,679,888.24
  5. Step 5: Solve for x
    x = 110,303,679,888.24/333,012.80
  6. Step 6: Final answer
    x = 331,229.55

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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.