Home / 221,033.13-305,021.61-122,922.39

Finding the Fourth Proportional to 221,033.13, 305,021.61 and 122,922.39

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Solution

The fourth proportional to 221,033.13, 305,021.61 and 122,922.39 is: 169,630.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,033.13 : 305,021.61 = 122,922.39 : x
  2. Step 2: Convert to fraction form
    221,033.13/305,021.61 = 122,922.39/x
  3. Step 3: Cross multiply
    221,033.13x = 305,021.61 × 122,922.39
  4. Step 4: Simplify right side
    221,033.13x = 37,493,985,302.85
  5. Step 5: Solve for x
    x = 37,493,985,302.85/221,033.13
  6. Step 6: Final answer
    x = 169,630.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.