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Finding the Fourth Proportional to 419,766.16, 579,289.44 and 228,791.92

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Solution

The fourth proportional to 419,766.16, 579,289.44 and 228,791.92 is: 315,739.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,766.16 : 579,289.44 = 228,791.92 : x
  2. Step 2: Convert to fraction form
    419,766.16/579,289.44 = 228,791.92/x
  3. Step 3: Cross multiply
    419,766.16x = 579,289.44 × 228,791.92
  4. Step 4: Simplify right side
    419,766.16x = 132,536,743,213.33
  5. Step 5: Solve for x
    x = 132,536,743,213.33/419,766.16
  6. Step 6: Final answer
    x = 315,739.47

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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.