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Finding the Fourth Proportional to 323,689.80, 445,675.32 and 275,196.18

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Solution

The fourth proportional to 323,689.80, 445,675.32 and 275,196.18 is: 378,906.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,689.80 : 445,675.32 = 275,196.18 : x
  2. Step 2: Convert to fraction form
    323,689.80/445,675.32 = 275,196.18/x
  3. Step 3: Cross multiply
    323,689.80x = 445,675.32 × 275,196.18
  4. Step 4: Simplify right side
    323,689.80x = 122,648,145,584.28
  5. Step 5: Solve for x
    x = 122,648,145,584.28/323,689.80
  6. Step 6: Final answer
    x = 378,906.43

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1.5x scale

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.