Finding the Fourth Proportional to 221,375.12, 305,531.88 and 130,740.88
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Solution
The fourth proportional to 221,375.12, 305,531.88 and 130,740.88 is: 180,442.62
Step by Step Solution
- Step 1: Write the proportion equation
221,375.12 : 305,531.88 = 130,740.88 : x - Step 2: Convert to fraction form
221,375.12/305,531.88 = 130,740.88/x - Step 3: Cross multiply
221,375.12x = 305,531.88 × 130,740.88 - Step 4: Simplify right side
221,375.12x = 39,945,506,859.25 - Step 5: Solve for x
x = 39,945,506,859.25/221,375.12 - Step 6: Final answer
x = 180,442.62
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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.