Finding the Fourth Proportional to 426,608.64, 640,099.80 and 202,129.29
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Solution
The fourth proportional to 426,608.64, 640,099.80 and 202,129.29 is: 303,282.46
Step by Step Solution
- Step 1: Write the proportion equation
426,608.64 : 640,099.80 = 202,129.29 : x - Step 2: Convert to fraction form
426,608.64/640,099.80 = 202,129.29/x - Step 3: Cross multiply
426,608.64x = 640,099.80 × 202,129.29 - Step 4: Simplify right side
426,608.64x = 129,382,918,103.14 - Step 5: Solve for x
x = 129,382,918,103.14/426,608.64 - Step 6: Final answer
x = 303,282.46
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1.5x scale
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.