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Finding the Fourth Proportional to 328,556.44, 492,835.14 and 79,238.44

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Solution

The fourth proportional to 328,556.44, 492,835.14 and 79,238.44 is: 118,857.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,556.44 : 492,835.14 = 79,238.44 : x
  2. Step 2: Convert to fraction form
    328,556.44/492,835.14 = 79,238.44/x
  3. Step 3: Cross multiply
    328,556.44x = 492,835.14 × 79,238.44
  4. Step 4: Simplify right side
    328,556.44x = 39,051,487,670.78
  5. Step 5: Solve for x
    x = 39,051,487,670.78/328,556.44
  6. Step 6: Final answer
    x = 118,857.78

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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.