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Finding the Fourth Proportional to 355,144.06, 490,080.06 and 193,996.78

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Solution

The fourth proportional to 355,144.06, 490,080.06 and 193,996.78 is: 267,705.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,144.06 : 490,080.06 = 193,996.78 : x
  2. Step 2: Convert to fraction form
    355,144.06/490,080.06 = 193,996.78/x
  3. Step 3: Cross multiply
    355,144.06x = 490,080.06 × 193,996.78
  4. Step 4: Simplify right side
    355,144.06x = 95,073,953,582.21
  5. Step 5: Solve for x
    x = 95,073,953,582.21/355,144.06
  6. Step 6: Final answer
    x = 267,705.32

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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.