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Finding the Fourth Proportional to 351,617.99, 485,208.86 and 198,662.60

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Solution

The fourth proportional to 351,617.99, 485,208.86 and 198,662.60 is: 274,140.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,617.99 : 485,208.86 = 198,662.60 : x
  2. Step 2: Convert to fraction form
    351,617.99/485,208.86 = 198,662.60/x
  3. Step 3: Cross multiply
    351,617.99x = 485,208.86 × 198,662.60
  4. Step 4: Simplify right side
    351,617.99x = 96,392,853,890.35
  5. Step 5: Solve for x
    x = 96,392,853,890.35/351,617.99
  6. Step 6: Final answer
    x = 274,140.85

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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.