Finding the Fourth Proportional to 312,782.82, 431,628.74 and 169,539.80
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Solution
The fourth proportional to 312,782.82, 431,628.74 and 169,539.80 is: 233,958.65
Step by Step Solution
- Step 1: Write the proportion equation
312,782.82 : 431,628.74 = 169,539.80 : x - Step 2: Convert to fraction form
312,782.82/431,628.74 = 169,539.80/x - Step 3: Cross multiply
312,782.82x = 431,628.74 × 169,539.80 - Step 4: Simplify right side
312,782.82x = 73,178,247,248.01 - Step 5: Solve for x
x = 73,178,247,248.01/312,782.82 - Step 6: Final answer
x = 233,958.65
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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.