Finding the Fourth Proportional to 494,021.61, 681,740.86 and 279,157.05
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Solution
The fourth proportional to 494,021.61, 681,740.86 and 279,157.05 is: 385,231.66
Step by Step Solution
- Step 1: Write the proportion equation
494,021.61 : 681,740.86 = 279,157.05 : x - Step 2: Convert to fraction form
494,021.61/681,740.86 = 279,157.05/x - Step 3: Cross multiply
494,021.61x = 681,740.86 × 279,157.05 - Step 4: Simplify right side
494,021.61x = 190,312,767,342.06 - Step 5: Solve for x
x = 190,312,767,342.06/494,021.61 - Step 6: Final answer
x = 385,231.66
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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.