Finding the Fourth Proportional to 312,786.60, 431,645.82 and 169,546.62
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Solution
The fourth proportional to 312,786.60, 431,645.82 and 169,546.62 is: 233,974.50
Step by Step Solution
- Step 1: Write the proportion equation
312,786.60 : 431,645.82 = 169,546.62 : x - Step 2: Convert to fraction form
312,786.60/431,645.82 = 169,546.62/x - Step 3: Cross multiply
312,786.60x = 431,645.82 × 169,546.62 - Step 4: Simplify right side
312,786.60x = 73,184,089,818.13 - Step 5: Solve for x
x = 73,184,089,818.13/312,786.60 - Step 6: Final answer
x = 233,974.50
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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.