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Finding the Fourth Proportional to 419,735.80, 579,218.52 and 228,745.06

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Solution

The fourth proportional to 419,735.80, 579,218.52 and 228,745.06 is: 315,658.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,735.80 : 579,218.52 = 228,745.06 : x
  2. Step 2: Convert to fraction form
    419,735.80/579,218.52 = 228,745.06/x
  3. Step 3: Cross multiply
    419,735.80x = 579,218.52 × 228,745.06
  4. Step 4: Simplify right side
    419,735.80x = 132,493,375,110.51
  5. Step 5: Solve for x
    x = 132,493,375,110.51/419,735.80
  6. Step 6: Final answer
    x = 315,658.98

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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.