Finding the Fourth Proportional to 285,721.92, 394,305.84 and 158,389.92
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Solution
The fourth proportional to 285,721.92, 394,305.84 and 158,389.92 is: 218,583.41
Step by Step Solution
- Step 1: Write the proportion equation
285,721.92 : 394,305.84 = 158,389.92 : x - Step 2: Convert to fraction form
285,721.92/394,305.84 = 158,389.92/x - Step 3: Cross multiply
285,721.92x = 394,305.84 × 158,389.92 - Step 4: Simplify right side
285,721.92x = 62,454,070,453.13 - Step 5: Solve for x
x = 62,454,070,453.13/285,721.92 - Step 6: Final answer
x = 218,583.41
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1.5x scale
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.