Finding the Fourth Proportional to 218,916.10, 302,109.56 and 122,119.26
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Solution
The fourth proportional to 218,916.10, 302,109.56 and 122,119.26 is: 168,527.56
Step by Step Solution
- Step 1: Write the proportion equation
218,916.10 : 302,109.56 = 122,119.26 : x - Step 2: Convert to fraction form
218,916.10/302,109.56 = 122,119.26/x - Step 3: Cross multiply
218,916.10x = 302,109.56 × 122,119.26 - Step 4: Simplify right side
218,916.10x = 36,893,395,906.13 - Step 5: Solve for x
x = 36,893,395,906.13/218,916.10 - Step 6: Final answer
x = 168,527.56
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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.