Home / 221,022.20-331,706.10-102,708.20

Finding the Fourth Proportional to 221,022.20, 331,706.10 and 102,708.20

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Solution

The fourth proportional to 221,022.20, 331,706.10 and 102,708.20 is: 154,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,022.20 : 331,706.10 = 102,708.20 : x
  2. Step 2: Convert to fraction form
    221,022.20/331,706.10 = 102,708.20/x
  3. Step 3: Cross multiply
    221,022.20x = 331,706.10 × 102,708.20
  4. Step 4: Simplify right side
    221,022.20x = 34,068,936,460.02
  5. Step 5: Solve for x
    x = 34,068,936,460.02/221,022.20
  6. Step 6: Final answer
    x = 154,142.60

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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.