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Finding the Fourth Proportional to 221,085.20, 330,922.20 and 174,429.20

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Solution

The fourth proportional to 221,085.20, 330,922.20 and 174,429.20 is: 261,087.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,085.20 : 330,922.20 = 174,429.20 : x
  2. Step 2: Convert to fraction form
    221,085.20/330,922.20 = 174,429.20/x
  3. Step 3: Cross multiply
    221,085.20x = 330,922.20 × 174,429.20
  4. Step 4: Simplify right side
    221,085.20x = 57,722,494,608.24
  5. Step 5: Solve for x
    x = 57,722,494,608.24/221,085.20
  6. Step 6: Final answer
    x = 261,087.10

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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.