Finding the Fourth Proportional to 285,643.84, 394,172.84 and 158,311.84
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Solution
The fourth proportional to 285,643.84, 394,172.84 and 158,311.84 is: 218,461.66
Step by Step Solution
- Step 1: Write the proportion equation
285,643.84 : 394,172.84 = 158,311.84 : x - Step 2: Convert to fraction form
285,643.84/394,172.84 = 158,311.84/x - Step 3: Cross multiply
285,643.84x = 394,172.84 × 158,311.84 - Step 4: Simplify right side
285,643.84x = 62,402,227,578.43 - Step 5: Solve for x
x = 62,402,227,578.43/285,643.84 - Step 6: Final answer
x = 218,461.66
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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.