Finding the Fourth Proportional to 281,720.15, 388,771.58 and 154,395.44
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Solution
The fourth proportional to 281,720.15, 388,771.58 and 154,395.44 is: 213,064.48
Step by Step Solution
- Step 1: Write the proportion equation
281,720.15 : 388,771.58 = 154,395.44 : x - Step 2: Convert to fraction form
281,720.15/388,771.58 = 154,395.44/x - Step 3: Cross multiply
281,720.15x = 388,771.58 × 154,395.44 - Step 4: Simplify right side
281,720.15x = 60,024,558,381.62 - Step 5: Solve for x
x = 60,024,558,381.62/281,720.15 - Step 6: Final answer
x = 213,064.48
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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.