Home / 221,200.75-305,256.67-125,707.51

Finding the Fourth Proportional to 221,200.75, 305,256.67 and 125,707.51

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Solution

The fourth proportional to 221,200.75, 305,256.67 and 125,707.51 is: 173,476.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,200.75 : 305,256.67 = 125,707.51 : x
  2. Step 2: Convert to fraction form
    221,200.75/305,256.67 = 125,707.51/x
  3. Step 3: Cross multiply
    221,200.75x = 305,256.67 × 125,707.51
  4. Step 4: Simplify right side
    221,200.75x = 38,373,055,896.59
  5. Step 5: Solve for x
    x = 38,373,055,896.59/221,200.75
  6. Step 6: Final answer
    x = 173,476.16

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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.