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Finding the Fourth Proportional to 351,614.09, 485,229.78 and 190,469.15

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Solution

The fourth proportional to 351,614.09, 485,229.78 and 190,469.15 is: 262,848.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,614.09 : 485,229.78 = 190,469.15 : x
  2. Step 2: Convert to fraction form
    351,614.09/485,229.78 = 190,469.15/x
  3. Step 3: Cross multiply
    351,614.09x = 485,229.78 × 190,469.15
  4. Step 4: Simplify right side
    351,614.09x = 92,421,303,751.29
  5. Step 5: Solve for x
    x = 92,421,303,751.29/351,614.09
  6. Step 6: Final answer
    x = 262,848.69

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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.