Finding the Fourth Proportional to 212,441.43, 318,203.44 and 99,953.09
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Solution
The fourth proportional to 212,441.43, 318,203.44 and 99,953.09 is: 149,713.81
Step by Step Solution
- Step 1: Write the proportion equation
212,441.43 : 318,203.44 = 99,953.09 : x - Step 2: Convert to fraction form
212,441.43/318,203.44 = 99,953.09/x - Step 3: Cross multiply
212,441.43x = 318,203.44 × 99,953.09 - Step 4: Simplify right side
212,441.43x = 31,805,416,428.99 - Step 5: Solve for x
x = 31,805,416,428.99/212,441.43 - Step 6: Final answer
x = 149,713.81
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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.