Finding the Fourth Proportional to 388,163.49, 535,112.13 and 301,971.07
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Solution
The fourth proportional to 388,163.49, 535,112.13 and 301,971.07 is: 416,289.49
Step by Step Solution
- Step 1: Write the proportion equation
388,163.49 : 535,112.13 = 301,971.07 : x - Step 2: Convert to fraction form
388,163.49/535,112.13 = 301,971.07/x - Step 3: Cross multiply
388,163.49x = 535,112.13 × 301,971.07 - Step 4: Simplify right side
388,163.49x = 161,588,382,466.08 - Step 5: Solve for x
x = 161,588,382,466.08/388,163.49 - Step 6: Final answer
x = 416,289.49
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1.5x scale
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.