Finding the Fourth Proportional to 281,452.84, 388,391.52 and 154,129.12
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Solution
The fourth proportional to 281,452.84, 388,391.52 and 154,129.12 is: 212,690.85
Step by Step Solution
- Step 1: Write the proportion equation
281,452.84 : 388,391.52 = 154,129.12 : x - Step 2: Convert to fraction form
281,452.84/388,391.52 = 154,129.12/x - Step 3: Cross multiply
281,452.84x = 388,391.52 × 154,129.12 - Step 4: Simplify right side
281,452.84x = 59,862,443,193.06 - Step 5: Solve for x
x = 59,862,443,193.06/281,452.84 - Step 6: Final answer
x = 212,690.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.