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Finding the Fourth Proportional to 351,537.20, 485,118.92 and 190,388.57

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Solution

The fourth proportional to 351,537.20, 485,118.92 and 190,388.57 is: 262,734.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,537.20 : 485,118.92 = 190,388.57 : x
  2. Step 2: Convert to fraction form
    351,537.20/485,118.92 = 190,388.57/x
  3. Step 3: Cross multiply
    351,537.20x = 485,118.92 × 190,388.57
  4. Step 4: Simplify right side
    351,537.20x = 92,361,094,081.21
  5. Step 5: Solve for x
    x = 92,361,094,081.21/351,537.20
  6. Step 6: Final answer
    x = 262,734.91

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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.