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Finding the Fourth Proportional to 419,718.27, 579,194.37 and 228,727.56

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Solution

The fourth proportional to 419,718.27, 579,194.37 and 228,727.56 is: 315,634.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,718.27 : 579,194.37 = 228,727.56 : x
  2. Step 2: Convert to fraction form
    419,718.27/579,194.37 = 228,727.56/x
  3. Step 3: Cross multiply
    419,718.27x = 579,194.37 × 228,727.56
  4. Step 4: Simplify right side
    419,718.27x = 132,477,715,015.84
  5. Step 5: Solve for x
    x = 132,477,715,015.84/419,718.27
  6. Step 6: Final answer
    x = 315,634.85

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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.