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Finding the Fourth Proportional to 351,932.94, 485,855.90 and 275,289.20

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Solution

The fourth proportional to 351,932.94, 485,855.90 and 275,289.20 is: 380,046.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,932.94 : 485,855.90 = 275,289.20 : x
  2. Step 2: Convert to fraction form
    351,932.94/485,855.90 = 275,289.20/x
  3. Step 3: Cross multiply
    351,932.94x = 485,855.90 × 275,289.20
  4. Step 4: Simplify right side
    351,932.94x = 133,750,878,220.56
  5. Step 5: Solve for x
    x = 133,750,878,220.56/351,932.94
  6. Step 6: Final answer
    x = 380,046.49

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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.