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Finding the Fourth Proportional to 355,339.85, 490,370.96 and 200,293.56

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Solution

The fourth proportional to 355,339.85, 490,370.96 and 200,293.56 is: 276,406.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,339.85 : 490,370.96 = 200,293.56 : x
  2. Step 2: Convert to fraction form
    355,339.85/490,370.96 = 200,293.56/x
  3. Step 3: Cross multiply
    355,339.85x = 490,370.96 × 200,293.56
  4. Step 4: Simplify right side
    355,339.85x = 98,218,144,297.55
  5. Step 5: Solve for x
    x = 98,218,144,297.55/355,339.85
  6. Step 6: Final answer
    x = 276,406.22

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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.