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Finding the Fourth Proportional to 351,540.39, 485,123.32 and 190,391.75

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Solution

The fourth proportional to 351,540.39, 485,123.32 and 190,391.75 is: 262,739.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,540.39 : 485,123.32 = 190,391.75 : x
  2. Step 2: Convert to fraction form
    351,540.39/485,123.32 = 190,391.75/x
  3. Step 3: Cross multiply
    351,540.39x = 485,123.32 × 190,391.75
  4. Step 4: Simplify right side
    351,540.39x = 92,363,474,483.03
  5. Step 5: Solve for x
    x = 92,363,474,483.03/351,540.39
  6. Step 6: Final answer
    x = 262,739.30

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1.5x scale

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.