Finding the Fourth Proportional to 279,076.80, 418,611.84 and 68,716.80
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Solution
The fourth proportional to 279,076.80, 418,611.84 and 68,716.80 is: 103,074.37
Step by Step Solution
- Step 1: Write the proportion equation
279,076.80 : 418,611.84 = 68,716.80 : x - Step 2: Convert to fraction form
279,076.80/418,611.84 = 68,716.80/x - Step 3: Cross multiply
279,076.80x = 418,611.84 × 68,716.80 - Step 4: Simplify right side
279,076.80x = 28,765,666,086.91 - Step 5: Solve for x
x = 28,765,666,086.91/279,076.80 - Step 6: Final answer
x = 103,074.37
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.