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Finding the Fourth Proportional to 355,229.20, 490,210.56 and 194,080.78

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Solution

The fourth proportional to 355,229.20, 490,210.56 and 194,080.78 is: 267,828.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,229.20 : 490,210.56 = 194,080.78 : x
  2. Step 2: Convert to fraction form
    355,229.20/490,210.56 = 194,080.78/x
  3. Step 3: Cross multiply
    355,229.20x = 490,210.56 × 194,080.78
  4. Step 4: Simplify right side
    355,229.20x = 95,140,447,849.04
  5. Step 5: Solve for x
    x = 95,140,447,849.04/355,229.20
  6. Step 6: Final answer
    x = 267,828.34

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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.