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Finding the Fourth Proportional to 351,619.65, 485,236.31 and 190,474.20

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Solution

The fourth proportional to 351,619.65, 485,236.31 and 190,474.20 is: 262,855.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,619.65 : 485,236.31 = 190,474.20 : x
  2. Step 2: Convert to fraction form
    351,619.65/485,236.31 = 190,474.20/x
  3. Step 3: Cross multiply
    351,619.65x = 485,236.31 × 190,474.20
  4. Step 4: Simplify right side
    351,619.65x = 92,424,997,005.83
  5. Step 5: Solve for x
    x = 92,424,997,005.83/351,619.65
  6. Step 6: Final answer
    x = 262,855.04

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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.