Finding the Fourth Proportional to 394,982.75, 545,076.56 and 216,134.75
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Solution
The fourth proportional to 394,982.75, 545,076.56 and 216,134.75 is: 298,266.15
Step by Step Solution
- Step 1: Write the proportion equation
394,982.75 : 545,076.56 = 216,134.75 : x - Step 2: Convert to fraction form
394,982.75/545,076.56 = 216,134.75/x - Step 3: Cross multiply
394,982.75x = 545,076.56 × 216,134.75 - Step 4: Simplify right side
394,982.75x = 117,809,986,026.46 - Step 5: Solve for x
x = 117,809,986,026.46/394,982.75 - Step 6: Final answer
x = 298,266.15
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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.