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Finding the Fourth Proportional to 355,804.12, 491,308.87 and 254,141.42

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Solution

The fourth proportional to 355,804.12, 491,308.87 and 254,141.42 is: 350,928.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,804.12 : 491,308.87 = 254,141.42 : x
  2. Step 2: Convert to fraction form
    355,804.12/491,308.87 = 254,141.42/x
  3. Step 3: Cross multiply
    355,804.12x = 491,308.87 × 254,141.42
  4. Step 4: Simplify right side
    355,804.12x = 124,861,934,473.31
  5. Step 5: Solve for x
    x = 124,861,934,473.31/355,804.12
  6. Step 6: Final answer
    x = 350,928.86

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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.