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Finding the Fourth Proportional to 351,309.98, 526,800.94 and 126,640.82

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Solution

The fourth proportional to 351,309.98, 526,800.94 and 126,640.82 is: 189,902.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,309.98 : 526,800.94 = 126,640.82 : x
  2. Step 2: Convert to fraction form
    351,309.98/526,800.94 = 126,640.82/x
  3. Step 3: Cross multiply
    351,309.98x = 526,800.94 × 126,640.82
  4. Step 4: Simplify right side
    351,309.98x = 66,714,503,018.37
  5. Step 5: Solve for x
    x = 66,714,503,018.37/351,309.98
  6. Step 6: Final answer
    x = 189,902.10

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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.