Home / 355,330.26-490,379.13-200,319.75

Finding the Fourth Proportional to 355,330.26, 490,379.13 and 200,319.75

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Solution

The fourth proportional to 355,330.26, 490,379.13 and 200,319.75 is: 276,454.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,330.26 : 490,379.13 = 200,319.75 : x
  2. Step 2: Convert to fraction form
    355,330.26/490,379.13 = 200,319.75/x
  3. Step 3: Cross multiply
    355,330.26x = 490,379.13 × 200,319.75
  4. Step 4: Simplify right side
    355,330.26x = 98,232,624,726.82
  5. Step 5: Solve for x
    x = 98,232,624,726.82/355,330.26
  6. Step 6: Final answer
    x = 276,454.43

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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.