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Finding the Fourth Proportional to 366,148, 505,291.92 and 207,172

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Solution

The fourth proportional to 366,148, 505,291.92 and 207,172 is: 285,901.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,148 : 505,291.92 = 207,172 : x
  2. Step 2: Convert to fraction form
    366,148/505,291.92 = 207,172/x
  3. Step 3: Cross multiply
    366,148x = 505,291.92 × 207,172
  4. Step 4: Simplify right side
    366,148x = 104,682,337,650.24
  5. Step 5: Solve for x
    x = 104,682,337,650.24/366,148
  6. Step 6: Final answer
    x = 285,901.71

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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.