Finding the Fourth Proportional to 312,670.44, 431,486.70 and 169,430.44
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Solution
The fourth proportional to 312,670.44, 431,486.70 and 169,430.44 is: 233,814.82
Step by Step Solution
- Step 1: Write the proportion equation
312,670.44 : 431,486.70 = 169,430.44 : x - Step 2: Convert to fraction form
312,670.44/431,486.70 = 169,430.44/x - Step 3: Cross multiply
312,670.44x = 431,486.70 × 169,430.44 - Step 4: Simplify right side
312,670.44x = 73,106,981,435.15 - Step 5: Solve for x
x = 73,106,981,435.15/312,670.44 - Step 6: Final answer
x = 233,814.82
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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.