Finding the Fourth Proportional to 218,279.61, 301,224.72 and 122,786.99
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Solution
The fourth proportional to 218,279.61, 301,224.72 and 122,786.99 is: 169,445.40
Step by Step Solution
- Step 1: Write the proportion equation
218,279.61 : 301,224.72 = 122,786.99 : x - Step 2: Convert to fraction form
218,279.61/301,224.72 = 122,786.99/x - Step 3: Cross multiply
218,279.61x = 301,224.72 × 122,786.99 - Step 4: Simplify right side
218,279.61x = 36,986,476,766.31 - Step 5: Solve for x
x = 36,986,476,766.31/218,279.61 - Step 6: Final answer
x = 169,445.40
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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.