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Finding the Fourth Proportional to 286,658.72, 395,556.89 and 171,942.03

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Solution

The fourth proportional to 286,658.72, 395,556.89 and 171,942.03 is: 237,260.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,658.72 : 395,556.89 = 171,942.03 : x
  2. Step 2: Convert to fraction form
    286,658.72/395,556.89 = 171,942.03/x
  3. Step 3: Cross multiply
    286,658.72x = 395,556.89 × 171,942.03
  4. Step 4: Simplify right side
    286,658.72x = 68,012,854,647.09
  5. Step 5: Solve for x
    x = 68,012,854,647.09/286,658.72
  6. Step 6: Final answer
    x = 237,260.72

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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.