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Finding the Fourth Proportional to 548,542.33, 756,683.78 and 319,073.78

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Solution

The fourth proportional to 548,542.33, 756,683.78 and 319,073.78 is: 440,144.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,542.33 : 756,683.78 = 319,073.78 : x
  2. Step 2: Convert to fraction form
    548,542.33/756,683.78 = 319,073.78/x
  3. Step 3: Cross multiply
    548,542.33x = 756,683.78 × 319,073.78
  4. Step 4: Simplify right side
    548,542.33x = 241,437,954,245.63
  5. Step 5: Solve for x
    x = 241,437,954,245.63/548,542.33
  6. Step 6: Final answer
    x = 440,144.62

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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.