Finding the Fourth Proportional to 428,043.68, 642,107.99 and 158,242.49
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Solution
The fourth proportional to 428,043.68, 642,107.99 and 158,242.49 is: 237,379.44
Step by Step Solution
- Step 1: Write the proportion equation
428,043.68 : 642,107.99 = 158,242.49 : x - Step 2: Convert to fraction form
428,043.68/642,107.99 = 158,242.49/x - Step 3: Cross multiply
428,043.68x = 642,107.99 × 158,242.49 - Step 4: Simplify right side
428,043.68x = 101,608,767,186.50 - Step 5: Solve for x
x = 101,608,767,186.50/428,043.68 - Step 6: Final answer
x = 237,379.44
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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.