Finding the Fourth Proportional to 285,990.42, 394,713.99 and 158,707.02
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Solution
The fourth proportional to 285,990.42, 394,713.99 and 158,707.02 is: 219,041.89
Step by Step Solution
- Step 1: Write the proportion equation
285,990.42 : 394,713.99 = 158,707.02 : x - Step 2: Convert to fraction form
285,990.42/394,713.99 = 158,707.02/x - Step 3: Cross multiply
285,990.42x = 394,713.99 × 158,707.02 - Step 4: Simplify right side
285,990.42x = 62,643,881,105.21 - Step 5: Solve for x
x = 62,643,881,105.21/285,990.42 - Step 6: Final answer
x = 219,041.89
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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.