Finding the Fourth Proportional to 394,169.82, 543,954.36 and 212,881.80
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Solution
The fourth proportional to 394,169.82, 543,954.36 and 212,881.80 is: 293,776.89
Step by Step Solution
- Step 1: Write the proportion equation
394,169.82 : 543,954.36 = 212,881.80 : x - Step 2: Convert to fraction form
394,169.82/543,954.36 = 212,881.80/x - Step 3: Cross multiply
394,169.82x = 543,954.36 × 212,881.80 - Step 4: Simplify right side
394,169.82x = 115,797,983,274.65 - Step 5: Solve for x
x = 115,797,983,274.65/394,169.82 - Step 6: Final answer
x = 293,776.89
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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.