Finding the Fourth Proportional to 211,028.09, 291,207.71 and 115,516.49
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Solution
The fourth proportional to 211,028.09, 291,207.71 and 115,516.49 is: 159,406.70
Step by Step Solution
- Step 1: Write the proportion equation
211,028.09 : 291,207.71 = 115,516.49 : x - Step 2: Convert to fraction form
211,028.09/291,207.71 = 115,516.49/x - Step 3: Cross multiply
211,028.09x = 291,207.71 × 115,516.49 - Step 4: Simplify right side
211,028.09x = 33,639,291,942.56 - Step 5: Solve for x
x = 33,639,291,942.56/211,028.09 - Step 6: Final answer
x = 159,406.70
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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.