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Finding the Fourth Proportional to 548,636.09, 756,812.97 and 319,167.54

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Solution

The fourth proportional to 548,636.09, 756,812.97 and 319,167.54 is: 440,273.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,636.09 : 756,812.97 = 319,167.54 : x
  2. Step 2: Convert to fraction form
    548,636.09/756,812.97 = 319,167.54/x
  3. Step 3: Cross multiply
    548,636.09x = 756,812.97 × 319,167.54
  4. Step 4: Simplify right side
    548,636.09x = 241,550,133,874.99
  5. Step 5: Solve for x
    x = 241,550,133,874.99/548,636.09
  6. Step 6: Final answer
    x = 440,273.87

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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.