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Finding the Fourth Proportional to 323,660.22, 446,842.46 and 287,750.85

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Solution

The fourth proportional to 323,660.22, 446,842.46 and 287,750.85 is: 397,266.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,660.22 : 446,842.46 = 287,750.85 : x
  2. Step 2: Convert to fraction form
    323,660.22/446,842.46 = 287,750.85/x
  3. Step 3: Cross multiply
    323,660.22x = 446,842.46 × 287,750.85
  4. Step 4: Simplify right side
    323,660.22x = 128,579,296,724.81
  5. Step 5: Solve for x
    x = 128,579,296,724.81/323,660.22
  6. Step 6: Final answer
    x = 397,266.30

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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.