Finding the Fourth Proportional to 279,990.41, 420,047.81 and 80,295.44
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Solution
The fourth proportional to 279,990.41, 420,047.81 and 80,295.44 is: 120,460.99
Step by Step Solution
- Step 1: Write the proportion equation
279,990.41 : 420,047.81 = 80,295.44 : x - Step 2: Convert to fraction form
279,990.41/420,047.81 = 80,295.44/x - Step 3: Cross multiply
279,990.41x = 420,047.81 × 80,295.44 - Step 4: Simplify right side
279,990.41x = 33,727,921,524.38 - Step 5: Solve for x
x = 33,727,921,524.38/279,990.41 - Step 6: Final answer
x = 120,460.99
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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.