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Finding the Fourth Proportional to 352,128.64, 485,930.88 and 199,164.16

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Solution

The fourth proportional to 352,128.64, 485,930.88 and 199,164.16 is: 274,842.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,128.64 : 485,930.88 = 199,164.16 : x
  2. Step 2: Convert to fraction form
    352,128.64/485,930.88 = 199,164.16/x
  3. Step 3: Cross multiply
    352,128.64x = 485,930.88 × 199,164.16
  4. Step 4: Simplify right side
    352,128.64x = 96,780,015,533.26
  5. Step 5: Solve for x
    x = 96,780,015,533.26/352,128.64
  6. Step 6: Final answer
    x = 274,842.78

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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.