Home / 221,997.66-306,350.55-121,393.50

Finding the Fourth Proportional to 221,997.66, 306,350.55 and 121,393.50

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Solution

The fourth proportional to 221,997.66, 306,350.55 and 121,393.50 is: 167,519.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,997.66 : 306,350.55 = 121,393.50 : x
  2. Step 2: Convert to fraction form
    221,997.66/306,350.55 = 121,393.50/x
  3. Step 3: Cross multiply
    221,997.66x = 306,350.55 × 121,393.50
  4. Step 4: Simplify right side
    221,997.66x = 37,188,965,491.43
  5. Step 5: Solve for x
    x = 37,188,965,491.43/221,997.66
  6. Step 6: Final answer
    x = 167,519.63

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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.