Home / 221,997.73-306,350.64-121,393.57

Finding the Fourth Proportional to 221,997.73, 306,350.64 and 121,393.57

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Solution

The fourth proportional to 221,997.73, 306,350.64 and 121,393.57 is: 167,519.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,997.73 : 306,350.64 = 121,393.57 : x
  2. Step 2: Convert to fraction form
    221,997.73/306,350.64 = 121,393.57/x
  3. Step 3: Cross multiply
    221,997.73x = 306,350.64 × 121,393.57
  4. Step 4: Simplify right side
    221,997.73x = 37,188,995,722.66
  5. Step 5: Solve for x
    x = 37,188,995,722.66/221,997.73
  6. Step 6: Final answer
    x = 167,519.72

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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.