Home / 221,471.64-305,629.07-120,869.64

Finding the Fourth Proportional to 221,471.64, 305,629.07 and 120,869.64

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Solution

The fourth proportional to 221,471.64, 305,629.07 and 120,869.64 is: 166,799.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,471.64 : 305,629.07 = 120,869.64 : x
  2. Step 2: Convert to fraction form
    221,471.64/305,629.07 = 120,869.64/x
  3. Step 3: Cross multiply
    221,471.64x = 305,629.07 × 120,869.64
  4. Step 4: Simplify right side
    221,471.64x = 36,941,275,060.09
  5. Step 5: Solve for x
    x = 36,941,275,060.09/221,471.64
  6. Step 6: Final answer
    x = 166,799.12

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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.