Finding the Fourth Proportional to 879,138.80, 1,318,578.60 and 248,116.40
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Solution
The fourth proportional to 879,138.80, 1,318,578.60 and 248,116.40 is: 372,138.02
Step by Step Solution
- Step 1: Write the proportion equation
879,138.80 : 1,318,578.60 = 248,116.40 : x - Step 2: Convert to fraction form
879,138.80/1,318,578.60 = 248,116.40/x - Step 3: Cross multiply
879,138.80x = 1,318,578.60 × 248,116.40 - Step 4: Simplify right side
879,138.80x = 327,160,975,349.04 - Step 5: Solve for x
x = 327,160,975,349.04/879,138.80 - Step 6: Final answer
x = 372,138.02
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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.