Home / 221,015.56-305,026.75-122,908.59

Finding the Fourth Proportional to 221,015.56, 305,026.75 and 122,908.59

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Solution

The fourth proportional to 221,015.56, 305,026.75 and 122,908.59 is: 169,627.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,015.56 : 305,026.75 = 122,908.59 : x
  2. Step 2: Convert to fraction form
    221,015.56/305,026.75 = 122,908.59/x
  3. Step 3: Cross multiply
    221,015.56x = 305,026.75 × 122,908.59
  4. Step 4: Simplify right side
    221,015.56x = 37,490,407,593.30
  5. Step 5: Solve for x
    x = 37,490,407,593.30/221,015.56
  6. Step 6: Final answer
    x = 169,627.91

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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.