Finding the Fourth Proportional to 285,982.05, 428,975.96 and 86,304.09
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Solution
The fourth proportional to 285,982.05, 428,975.96 and 86,304.09 is: 129,457.00
Step by Step Solution
- Step 1: Write the proportion equation
285,982.05 : 428,975.96 = 86,304.09 : x - Step 2: Convert to fraction form
285,982.05/428,975.96 = 86,304.09/x - Step 3: Cross multiply
285,982.05x = 428,975.96 × 86,304.09 - Step 4: Simplify right side
285,982.05x = 37,022,379,428.16 - Step 5: Solve for x
x = 37,022,379,428.16/285,982.05 - Step 6: Final answer
x = 129,457.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.