Finding the Fourth Proportional to 210,902.25, 291,050.82 and 129,229.09
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Solution
The fourth proportional to 210,902.25, 291,050.82 and 129,229.09 is: 178,339.64
Step by Step Solution
- Step 1: Write the proportion equation
210,902.25 : 291,050.82 = 129,229.09 : x - Step 2: Convert to fraction form
210,902.25/291,050.82 = 129,229.09/x - Step 3: Cross multiply
210,902.25x = 291,050.82 × 129,229.09 - Step 4: Simplify right side
210,902.25x = 37,612,231,884.73 - Step 5: Solve for x
x = 37,612,231,884.73/210,902.25 - Step 6: Final answer
x = 178,339.64
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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.