Finding the Fourth Proportional to 211,986.26, 292,542.66 and 115,191.08
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Solution
The fourth proportional to 211,986.26, 292,542.66 and 115,191.08 is: 158,964.57
Step by Step Solution
- Step 1: Write the proportion equation
211,986.26 : 292,542.66 = 115,191.08 : x - Step 2: Convert to fraction form
211,986.26/292,542.66 = 115,191.08/x - Step 3: Cross multiply
211,986.26x = 292,542.66 × 115,191.08 - Step 4: Simplify right side
211,986.26x = 33,698,304,951.47 - Step 5: Solve for x
x = 33,698,304,951.47/211,986.26 - Step 6: Final answer
x = 158,964.57
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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.