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Finding the Fourth Proportional to 351,620.09, 485,235.27 and 190,475.78

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Solution

The fourth proportional to 351,620.09, 485,235.27 and 190,475.78 is: 262,856.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,620.09 : 485,235.27 = 190,475.78 : x
  2. Step 2: Convert to fraction form
    351,620.09/485,235.27 = 190,475.78/x
  3. Step 3: Cross multiply
    351,620.09x = 485,235.27 × 190,475.78
  4. Step 4: Simplify right side
    351,620.09x = 92,425,565,743.17
  5. Step 5: Solve for x
    x = 92,425,565,743.17/351,620.09
  6. Step 6: Final answer
    x = 262,856.33

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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.