Finding the Fourth Proportional to 222,445.70, 306,975.09 and 121,843.70
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Solution
The fourth proportional to 222,445.70, 306,975.09 and 121,843.70 is: 168,144.32
Step by Step Solution
- Step 1: Write the proportion equation
222,445.70 : 306,975.09 = 121,843.70 : x - Step 2: Convert to fraction form
222,445.70/306,975.09 = 121,843.70/x - Step 3: Cross multiply
222,445.70x = 306,975.09 × 121,843.70 - Step 4: Simplify right side
222,445.70x = 37,402,980,773.43 - Step 5: Solve for x
x = 37,402,980,773.43/222,445.70 - Step 6: Final answer
x = 168,144.32
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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.