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Finding the Fourth Proportional to 355,289.62, 490,300.96 and 194,144.66

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Solution

The fourth proportional to 355,289.62, 490,300.96 and 194,144.66 is: 267,920.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,289.62 : 490,300.96 = 194,144.66 : x
  2. Step 2: Convert to fraction form
    355,289.62/490,300.96 = 194,144.66/x
  3. Step 3: Cross multiply
    355,289.62x = 490,300.96 × 194,144.66
  4. Step 4: Simplify right side
    355,289.62x = 95,189,313,176.87
  5. Step 5: Solve for x
    x = 95,189,313,176.87/355,289.62
  6. Step 6: Final answer
    x = 267,920.33

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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.