Finding the Fourth Proportional to 213,213.60, 319,819.77 and 86,824.08
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Solution
The fourth proportional to 213,213.60, 319,819.77 and 86,824.08 is: 130,235.86
Step by Step Solution
- Step 1: Write the proportion equation
213,213.60 : 319,819.77 = 86,824.08 : x - Step 2: Convert to fraction form
213,213.60/319,819.77 = 86,824.08/x - Step 3: Cross multiply
213,213.60x = 319,819.77 × 86,824.08 - Step 4: Simplify right side
213,213.60x = 27,768,057,296.06 - Step 5: Solve for x
x = 27,768,057,296.06/213,213.60 - Step 6: Final answer
x = 130,235.86
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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.