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Finding the Fourth Proportional to 351,661.32, 485,292 and 190,520.46

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Solution

The fourth proportional to 351,661.32, 485,292 and 190,520.46 is: 262,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,661.32 : 485,292 = 190,520.46 : x
  2. Step 2: Convert to fraction form
    351,661.32/485,292 = 190,520.46/x
  3. Step 3: Cross multiply
    351,661.32x = 485,292 × 190,520.46
  4. Step 4: Simplify right side
    351,661.32x = 92,458,055,074.32
  5. Step 5: Solve for x
    x = 92,458,055,074.32/351,661.32
  6. Step 6: Final answer
    x = 262,917.90

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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.