Home / 221,019.20-331,701.60-102,705.20

Finding the Fourth Proportional to 221,019.20, 331,701.60 and 102,705.20

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Solution

The fourth proportional to 221,019.20, 331,701.60 and 102,705.20 is: 154,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,019.20 : 331,701.60 = 102,705.20 : x
  2. Step 2: Convert to fraction form
    221,019.20/331,701.60 = 102,705.20/x
  3. Step 3: Cross multiply
    221,019.20x = 331,701.60 × 102,705.20
  4. Step 4: Simplify right side
    221,019.20x = 34,067,479,168.32
  5. Step 5: Solve for x
    x = 34,067,479,168.32/221,019.20
  6. Step 6: Final answer
    x = 154,138.10

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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.