Finding the Fourth Proportional to 285,847.11, 394,459.09 and 158,534.55
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Solution
The fourth proportional to 285,847.11, 394,459.09 and 158,534.55 is: 218,772.17
Step by Step Solution
- Step 1: Write the proportion equation
285,847.11 : 394,459.09 = 158,534.55 : x - Step 2: Convert to fraction form
285,847.11/394,459.09 = 158,534.55/x - Step 3: Cross multiply
285,847.11x = 394,459.09 × 158,534.55 - Step 4: Simplify right side
285,847.11x = 62,535,393,930.22 - Step 5: Solve for x
x = 62,535,393,930.22/285,847.11 - Step 6: Final answer
x = 218,772.17
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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.