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Finding the Fourth Proportional to 355,633.40, 491,326.72 and 298,183.66

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Solution

The fourth proportional to 355,633.40, 491,326.72 and 298,183.66 is: 411,956.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,633.40 : 491,326.72 = 298,183.66 : x
  2. Step 2: Convert to fraction form
    355,633.40/491,326.72 = 298,183.66/x
  3. Step 3: Cross multiply
    355,633.40x = 491,326.72 × 298,183.66
  4. Step 4: Simplify right side
    355,633.40x = 146,505,597,651.62
  5. Step 5: Solve for x
    x = 146,505,597,651.62/355,633.40
  6. Step 6: Final answer
    x = 411,956.80

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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.