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Finding the Fourth Proportional to 468,915.54, 647,103.81 and 275,285.34

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Solution

The fourth proportional to 468,915.54, 647,103.81 and 275,285.34 is: 379,893.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,915.54 : 647,103.81 = 275,285.34 : x
  2. Step 2: Convert to fraction form
    468,915.54/647,103.81 = 275,285.34/x
  3. Step 3: Cross multiply
    468,915.54x = 647,103.81 × 275,285.34
  4. Step 4: Simplify right side
    468,915.54x = 178,138,192,351.15
  5. Step 5: Solve for x
    x = 178,138,192,351.15/468,915.54
  6. Step 6: Final answer
    x = 379,893.98

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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.