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Finding the Fourth Proportional to 355,658.37, 490,778.87 and 200,601.12

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Solution

The fourth proportional to 355,658.37, 490,778.87 and 200,601.12 is: 276,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,658.37 : 490,778.87 = 200,601.12 : x
  2. Step 2: Convert to fraction form
    355,658.37/490,778.87 = 200,601.12/x
  3. Step 3: Cross multiply
    355,658.37x = 490,778.87 × 200,601.12
  4. Step 4: Simplify right side
    355,658.37x = 98,450,790,994.33
  5. Step 5: Solve for x
    x = 98,450,790,994.33/355,658.37
  6. Step 6: Final answer
    x = 276,812.80

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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.