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Finding the Fourth Proportional to 449,290.20, 620,157.78 and 277,260.78

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Solution

The fourth proportional to 449,290.20, 620,157.78 and 277,260.78 is: 382,704.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,290.20 : 620,157.78 = 277,260.78 : x
  2. Step 2: Convert to fraction form
    449,290.20/620,157.78 = 277,260.78/x
  3. Step 3: Cross multiply
    449,290.20x = 620,157.78 × 277,260.78
  4. Step 4: Simplify right side
    449,290.20x = 171,945,429,805.87
  5. Step 5: Solve for x
    x = 171,945,429,805.87/449,290.20
  6. Step 6: Final answer
    x = 382,704.61

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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.