Finding the Fourth Proportional to 281,733.12, 388,774.08 and 154,399.68
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Solution
The fourth proportional to 281,733.12, 388,774.08 and 154,399.68 is: 213,061.90
Step by Step Solution
- Step 1: Write the proportion equation
281,733.12 : 388,774.08 = 154,399.68 : x - Step 2: Convert to fraction form
281,733.12/388,774.08 = 154,399.68/x - Step 3: Cross multiply
281,733.12x = 388,774.08 × 154,399.68 - Step 4: Simplify right side
281,733.12x = 60,026,593,544.29 - Step 5: Solve for x
x = 60,026,593,544.29/281,733.12 - Step 6: Final answer
x = 213,061.90
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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.