Finding the Fourth Proportional to 261,987.21, 393,057.36 and 84,490.29
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Solution
The fourth proportional to 261,987.21, 393,057.36 and 84,490.29 is: 126,760.12
Step by Step Solution
- Step 1: Write the proportion equation
261,987.21 : 393,057.36 = 84,490.29 : x - Step 2: Convert to fraction form
261,987.21/393,057.36 = 84,490.29/x - Step 3: Cross multiply
261,987.21x = 393,057.36 × 84,490.29 - Step 4: Simplify right side
261,987.21x = 33,209,530,333.03 - Step 5: Solve for x
x = 33,209,530,333.03/261,987.21 - Step 6: Final answer
x = 126,760.12
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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.