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Finding the Fourth Proportional to 351,539.89, 485,122.63 and 190,391.25

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Solution

The fourth proportional to 351,539.89, 485,122.63 and 190,391.25 is: 262,738.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,539.89 : 485,122.63 = 190,391.25 : x
  2. Step 2: Convert to fraction form
    351,539.89/485,122.63 = 190,391.25/x
  3. Step 3: Cross multiply
    351,539.89x = 485,122.63 × 190,391.25
  4. Step 4: Simplify right side
    351,539.89x = 92,363,100,551.42
  5. Step 5: Solve for x
    x = 92,363,100,551.42/351,539.89
  6. Step 6: Final answer
    x = 262,738.61

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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.