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Finding the Fourth Proportional to 307,771.92, 424,738.08 and 171,813.42

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Solution

The fourth proportional to 307,771.92, 424,738.08 and 171,813.42 is: 237,109.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,771.92 : 424,738.08 = 171,813.42 : x
  2. Step 2: Convert to fraction form
    307,771.92/424,738.08 = 171,813.42/x
  3. Step 3: Cross multiply
    307,771.92x = 424,738.08 × 171,813.42
  4. Step 4: Simplify right side
    307,771.92x = 72,975,702,129.03
  5. Step 5: Solve for x
    x = 72,975,702,129.03/307,771.92
  6. Step 6: Final answer
    x = 237,109.68

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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.