Finding the Fourth Proportional to 286,343.11, 395,165.42 and 159,019.75
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Solution
The fourth proportional to 286,343.11, 395,165.42 and 159,019.75 is: 219,453.88
Step by Step Solution
- Step 1: Write the proportion equation
286,343.11 : 395,165.42 = 159,019.75 : x - Step 2: Convert to fraction form
286,343.11/395,165.42 = 159,019.75/x - Step 3: Cross multiply
286,343.11x = 395,165.42 × 159,019.75 - Step 4: Simplify right side
286,343.11x = 62,839,106,297.05 - Step 5: Solve for x
x = 62,839,106,297.05/286,343.11 - Step 6: Final answer
x = 219,453.88
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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.