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Finding the Fourth Proportional to 419,727.62, 579,207.22 and 228,736.91

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Solution

The fourth proportional to 419,727.62, 579,207.22 and 228,736.91 is: 315,647.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,727.62 : 579,207.22 = 228,736.91 : x
  2. Step 2: Convert to fraction form
    419,727.62/579,207.22 = 228,736.91/x
  3. Step 3: Cross multiply
    419,727.62x = 579,207.22 × 228,736.91
  4. Step 4: Simplify right side
    419,727.62x = 132,486,069,752.49
  5. Step 5: Solve for x
    x = 132,486,069,752.49/419,727.62
  6. Step 6: Final answer
    x = 315,647.73

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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.