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Finding the Fourth Proportional to 221,523.60, 305,698.62 and 126,028.23

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Solution

The fourth proportional to 221,523.60, 305,698.62 and 126,028.23 is: 173,916.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,523.60 : 305,698.62 = 126,028.23 : x
  2. Step 2: Convert to fraction form
    221,523.60/305,698.62 = 126,028.23/x
  3. Step 3: Cross multiply
    221,523.60x = 305,698.62 × 126,028.23
  4. Step 4: Simplify right side
    221,523.60x = 38,526,655,992.04
  5. Step 5: Solve for x
    x = 38,526,655,992.04/221,523.60
  6. Step 6: Final answer
    x = 173,916.71

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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.