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Finding the Fourth Proportional to 455,763, 628,965.90 and 254,571.96

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Solution

The fourth proportional to 455,763, 628,965.90 and 254,571.96 is: 351,316.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,763 : 628,965.90 = 254,571.96 : x
  2. Step 2: Convert to fraction form
    455,763/628,965.90 = 254,571.96/x
  3. Step 3: Cross multiply
    455,763x = 628,965.90 × 254,571.96
  4. Step 4: Simplify right side
    455,763x = 160,117,081,936.16
  5. Step 5: Solve for x
    x = 160,117,081,936.16/455,763
  6. Step 6: Final answer
    x = 351,316.54

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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.