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Finding the Fourth Proportional to 489,888.27, 675,993.60 and 275,051.97

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Solution

The fourth proportional to 489,888.27, 675,993.60 and 275,051.97 is: 379,542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,888.27 : 675,993.60 = 275,051.97 : x
  2. Step 2: Convert to fraction form
    489,888.27/675,993.60 = 275,051.97/x
  3. Step 3: Cross multiply
    489,888.27x = 675,993.60 × 275,051.97
  4. Step 4: Simplify right side
    489,888.27x = 185,933,371,387.39
  5. Step 5: Solve for x
    x = 185,933,371,387.39/489,888.27
  6. Step 6: Final answer
    x = 379,542.40

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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.