Finding the Fourth Proportional to 279,157.06, 418,907.80 and 129,369.44
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Solution
The fourth proportional to 279,157.06, 418,907.80 and 129,369.44 is: 194,133.97
Step by Step Solution
- Step 1: Write the proportion equation
279,157.06 : 418,907.80 = 129,369.44 : x - Step 2: Convert to fraction form
279,157.06/418,907.80 = 129,369.44/x - Step 3: Cross multiply
279,157.06x = 418,907.80 × 129,369.44 - Step 4: Simplify right side
279,157.06x = 54,193,867,497.63 - Step 5: Solve for x
x = 54,193,867,497.63/279,157.06 - Step 6: Final answer
x = 194,133.97
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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.