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Finding the Fourth Proportional to 486,013.25, 670,717.73 and 271,172.09

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Solution

The fourth proportional to 486,013.25, 670,717.73 and 271,172.09 is: 374,228.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,013.25 : 670,717.73 = 271,172.09 : x
  2. Step 2: Convert to fraction form
    486,013.25/670,717.73 = 271,172.09/x
  3. Step 3: Cross multiply
    486,013.25x = 670,717.73 × 271,172.09
  4. Step 4: Simplify right side
    486,013.25x = 181,879,928,644.16
  5. Step 5: Solve for x
    x = 181,879,928,644.16/486,013.25
  6. Step 6: Final answer
    x = 374,228.33

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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.