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Finding the Fourth Proportional to 228,679.09, 343,055 and 70,874.89

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Solution

The fourth proportional to 228,679.09, 343,055 and 70,874.89 is: 106,323.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,679.09 : 343,055 = 70,874.89 : x
  2. Step 2: Convert to fraction form
    228,679.09/343,055 = 70,874.89/x
  3. Step 3: Cross multiply
    228,679.09x = 343,055 × 70,874.89
  4. Step 4: Simplify right side
    228,679.09x = 24,313,985,388.95
  5. Step 5: Solve for x
    x = 24,313,985,388.95/228,679.09
  6. Step 6: Final answer
    x = 106,323.61

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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.