Home / 221,410.10-332,115.15-109,107.65

Finding the Fourth Proportional to 221,410.10, 332,115.15 and 109,107.65

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Solution

The fourth proportional to 221,410.10, 332,115.15 and 109,107.65 is: 163,661.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,410.10 : 332,115.15 = 109,107.65 : x
  2. Step 2: Convert to fraction form
    221,410.10/332,115.15 = 109,107.65/x
  3. Step 3: Cross multiply
    221,410.10x = 332,115.15 × 109,107.65
  4. Step 4: Simplify right side
    221,410.10x = 36,236,303,545.90
  5. Step 5: Solve for x
    x = 36,236,303,545.90/221,410.10
  6. Step 6: Final answer
    x = 163,661.48

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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.