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Finding the Fourth Proportional to 486,029.75, 670,753.31 and 271,174.50

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Solution

The fourth proportional to 486,029.75, 670,753.31 and 271,174.50 is: 374,238.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,029.75 : 670,753.31 = 271,174.50 : x
  2. Step 2: Convert to fraction form
    486,029.75/670,753.31 = 271,174.50/x
  3. Step 3: Cross multiply
    486,029.75x = 670,753.31 × 271,174.50
  4. Step 4: Simplify right side
    486,029.75x = 181,891,192,106.72
  5. Step 5: Solve for x
    x = 181,891,192,106.72/486,029.75
  6. Step 6: Final answer
    x = 374,238.81

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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.