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Finding the Fourth Proportional to 328,658.56, 491,690.72 and 248,926.25

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Solution

The fourth proportional to 328,658.56, 491,690.72 and 248,926.25 is: 372,406.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,658.56 : 491,690.72 = 248,926.25 : x
  2. Step 2: Convert to fraction form
    328,658.56/491,690.72 = 248,926.25/x
  3. Step 3: Cross multiply
    328,658.56x = 491,690.72 × 248,926.25
  4. Step 4: Simplify right side
    328,658.56x = 122,394,728,940.94
  5. Step 5: Solve for x
    x = 122,394,728,940.94/328,658.56
  6. Step 6: Final answer
    x = 372,406.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.