Finding the Fourth Proportional to 211,615.80, 317,434.08 and 85,238.98
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Solution
The fourth proportional to 211,615.80, 317,434.08 and 85,238.98 is: 127,862.65
Step by Step Solution
- Step 1: Write the proportion equation
211,615.80 : 317,434.08 = 85,238.98 : x - Step 2: Convert to fraction form
211,615.80/317,434.08 = 85,238.98/x - Step 3: Cross multiply
211,615.80x = 317,434.08 × 85,238.98 - Step 4: Simplify right side
211,615.80x = 27,057,757,196.44 - Step 5: Solve for x
x = 27,057,757,196.44/211,615.80 - Step 6: Final answer
x = 127,862.65
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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.