Finding the Fourth Proportional to 274,608.75, 378,965.84 and 155,376.75
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Solution
The fourth proportional to 274,608.75, 378,965.84 and 155,376.75 is: 214,423.17
Step by Step Solution
- Step 1: Write the proportion equation
274,608.75 : 378,965.84 = 155,376.75 : x - Step 2: Convert to fraction form
274,608.75/378,965.84 = 155,376.75/x - Step 3: Cross multiply
274,608.75x = 378,965.84 × 155,376.75 - Step 4: Simplify right side
274,608.75x = 58,882,479,803.34 - Step 5: Solve for x
x = 58,882,479,803.34/274,608.75 - Step 6: Final answer
x = 214,423.17
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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.