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Finding the Fourth Proportional to 203,351.49, 304,968.90 and 78,663.33

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Solution

The fourth proportional to 203,351.49, 304,968.90 and 78,663.33 is: 117,972.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,351.49 : 304,968.90 = 78,663.33 : x
  2. Step 2: Convert to fraction form
    203,351.49/304,968.90 = 78,663.33/x
  3. Step 3: Cross multiply
    203,351.49x = 304,968.90 × 78,663.33
  4. Step 4: Simplify right side
    203,351.49x = 23,989,869,220.44
  5. Step 5: Solve for x
    x = 23,989,869,220.44/203,351.49
  6. Step 6: Final answer
    x = 117,972.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.