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Finding the Fourth Proportional to 351,712.23, 485,362.19 and 190,571.64

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Solution

The fourth proportional to 351,712.23, 485,362.19 and 190,571.64 is: 262,988.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,712.23 : 485,362.19 = 190,571.64 : x
  2. Step 2: Convert to fraction form
    351,712.23/485,362.19 = 190,571.64/x
  3. Step 3: Cross multiply
    351,712.23x = 485,362.19 × 190,571.64
  4. Step 4: Simplify right side
    351,712.23x = 92,496,267,589.43
  5. Step 5: Solve for x
    x = 92,496,267,589.43/351,712.23
  6. Step 6: Final answer
    x = 262,988.49

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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.