Finding the Fourth Proportional to 394,975.13, 545,069.63 and 213,690.96
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Solution
The fourth proportional to 394,975.13, 545,069.63 and 213,690.96 is: 294,895.66
Step by Step Solution
- Step 1: Write the proportion equation
394,975.13 : 545,069.63 = 213,690.96 : x - Step 2: Convert to fraction form
394,975.13/545,069.63 = 213,690.96/x - Step 3: Cross multiply
394,975.13x = 545,069.63 × 213,690.96 - Step 4: Simplify right side
394,975.13x = 116,476,451,433.09 - Step 5: Solve for x
x = 116,476,451,433.09/394,975.13 - Step 6: Final answer
x = 294,895.66
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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.