Finding the Fourth Proportional to 221,272.80, 331,294.80 and 215,128.80
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Solution
The fourth proportional to 221,272.80, 331,294.80 and 215,128.80 is: 322,095.86
Step by Step Solution
- Step 1: Write the proportion equation
221,272.80 : 331,294.80 = 215,128.80 : x - Step 2: Convert to fraction form
221,272.80/331,294.80 = 215,128.80/x - Step 3: Cross multiply
221,272.80x = 331,294.80 × 215,128.80 - Step 4: Simplify right side
221,272.80x = 71,271,052,770.24 - Step 5: Solve for x
x = 71,271,052,770.24/221,272.80 - Step 6: Final answer
x = 322,095.86
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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.