Finding the Fourth Proportional to 281,207.20, 421,810.80 and 281,207.20
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Solution
The fourth proportional to 281,207.20, 421,810.80 and 281,207.20 is: 421,810.80
Step by Step Solution
- Step 1: Write the proportion equation
281,207.20 : 421,810.80 = 281,207.20 : x - Step 2: Convert to fraction form
281,207.20/421,810.80 = 281,207.20/x - Step 3: Cross multiply
281,207.20x = 421,810.80 × 281,207.20 - Step 4: Simplify right side
281,207.20x = 118,616,233,997.76 - Step 5: Solve for x
x = 118,616,233,997.76/281,207.20 - Step 6: Final answer
x = 421,810.80
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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.