Finding the Fourth Proportional to 285,718.84, 394,292.56 and 158,394.44
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Solution
The fourth proportional to 285,718.84, 394,292.56 and 158,394.44 is: 218,584.63
Step by Step Solution
- Step 1: Write the proportion equation
285,718.84 : 394,292.56 = 158,394.44 : x - Step 2: Convert to fraction form
285,718.84/394,292.56 = 158,394.44/x - Step 3: Cross multiply
285,718.84x = 394,292.56 × 158,394.44 - Step 4: Simplify right side
285,718.84x = 62,453,747,906.21 - Step 5: Solve for x
x = 62,453,747,906.21/285,718.84 - Step 6: Final answer
x = 218,584.63
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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.