Finding the Fourth Proportional to 279,993.09, 419,989.95 and 69,631.02
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Solution
The fourth proportional to 279,993.09, 419,989.95 and 69,631.02 is: 104,446.61
Step by Step Solution
- Step 1: Write the proportion equation
279,993.09 : 419,989.95 = 69,631.02 : x - Step 2: Convert to fraction form
279,993.09/419,989.95 = 69,631.02/x - Step 3: Cross multiply
279,993.09x = 419,989.95 × 69,631.02 - Step 4: Simplify right side
279,993.09x = 29,244,328,608.25 - Step 5: Solve for x
x = 29,244,328,608.25/279,993.09 - Step 6: Final answer
x = 104,446.61
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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.