Home / 221,519.16-305,703.36-126,039.60

Finding the Fourth Proportional to 221,519.16, 305,703.36 and 126,039.60

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Solution

The fourth proportional to 221,519.16, 305,703.36 and 126,039.60 is: 173,938.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,519.16 : 305,703.36 = 126,039.60 : x
  2. Step 2: Convert to fraction form
    221,519.16/305,703.36 = 126,039.60/x
  3. Step 3: Cross multiply
    221,519.16x = 305,703.36 × 126,039.60
  4. Step 4: Simplify right side
    221,519.16x = 38,530,729,213.06
  5. Step 5: Solve for x
    x = 38,530,729,213.06/221,519.16
  6. Step 6: Final answer
    x = 173,938.58

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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.