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Finding the Fourth Proportional to 275,118.98, 379,502.97 and 172,982.59

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Solution

The fourth proportional to 275,118.98, 379,502.97 and 172,982.59 is: 238,614.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,118.98 : 379,502.97 = 172,982.59 : x
  2. Step 2: Convert to fraction form
    275,118.98/379,502.97 = 172,982.59/x
  3. Step 3: Cross multiply
    275,118.98x = 379,502.97 × 172,982.59
  4. Step 4: Simplify right side
    275,118.98x = 65,647,406,038.88
  5. Step 5: Solve for x
    x = 65,647,406,038.88/275,118.98
  6. Step 6: Final answer
    x = 238,614.60

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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.