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Finding the Fourth Proportional to 228,818.22, 343,230.89 and 86,625.32

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Solution

The fourth proportional to 228,818.22, 343,230.89 and 86,625.32 is: 129,939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,818.22 : 343,230.89 = 86,625.32 : x
  2. Step 2: Convert to fraction form
    228,818.22/343,230.89 = 86,625.32/x
  3. Step 3: Cross multiply
    228,818.22x = 343,230.89 × 86,625.32
  4. Step 4: Simplify right side
    228,818.22x = 29,732,486,429.93
  5. Step 5: Solve for x
    x = 29,732,486,429.93/228,818.22
  6. Step 6: Final answer
    x = 129,939.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.