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Finding the Fourth Proportional to 486,790.56, 671,726.52 and 271,900.80

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Solution

The fourth proportional to 486,790.56, 671,726.52 and 271,900.80 is: 375,198.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,790.56 : 671,726.52 = 271,900.80 : x
  2. Step 2: Convert to fraction form
    486,790.56/671,726.52 = 271,900.80/x
  3. Step 3: Cross multiply
    486,790.56x = 671,726.52 × 271,900.80
  4. Step 4: Simplify right side
    486,790.56x = 182,642,978,169.22
  5. Step 5: Solve for x
    x = 182,642,978,169.22/486,790.56
  6. Step 6: Final answer
    x = 375,198.27

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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.