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Finding the Fourth Proportional to 419,781.03, 579,304.40 and 228,794.19

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Solution

The fourth proportional to 419,781.03, 579,304.40 and 228,794.19 is: 315,739.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,781.03 : 579,304.40 = 228,794.19 : x
  2. Step 2: Convert to fraction form
    419,781.03/579,304.40 = 228,794.19/x
  3. Step 3: Cross multiply
    419,781.03x = 579,304.40 × 228,794.19
  4. Step 4: Simplify right side
    419,781.03x = 132,541,479,817.47
  5. Step 5: Solve for x
    x = 132,541,479,817.47/419,781.03
  6. Step 6: Final answer
    x = 315,739.57

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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.