Finding the Fourth Proportional to 210,213.82, 290,092.35 and 128,514.79
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Solution
The fourth proportional to 210,213.82, 290,092.35 and 128,514.79 is: 177,348.75
Step by Step Solution
- Step 1: Write the proportion equation
210,213.82 : 290,092.35 = 128,514.79 : x - Step 2: Convert to fraction form
210,213.82/290,092.35 = 128,514.79/x - Step 3: Cross multiply
210,213.82x = 290,092.35 × 128,514.79 - Step 4: Simplify right side
210,213.82x = 37,281,157,440.86 - Step 5: Solve for x
x = 37,281,157,440.86/210,213.82 - Step 6: Final answer
x = 177,348.75
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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.