Finding the Fourth Proportional to 213,512.80, 319,917.36 and 73,194.40
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Solution
The fourth proportional to 213,512.80, 319,917.36 and 73,194.40 is: 109,670.99
Step by Step Solution
- Step 1: Write the proportion equation
213,512.80 : 319,917.36 = 73,194.40 : x - Step 2: Convert to fraction form
213,512.80/319,917.36 = 73,194.40/x - Step 3: Cross multiply
213,512.80x = 319,917.36 × 73,194.40 - Step 4: Simplify right side
213,512.80x = 23,416,159,214.78 - Step 5: Solve for x
x = 23,416,159,214.78/213,512.80 - Step 6: Final answer
x = 109,670.99
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1.5x scale
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.