Finding the Fourth Proportional to 225,889.42, 338,763.42 and 81,777.06
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Solution
The fourth proportional to 225,889.42, 338,763.42 and 81,777.06 is: 122,639.99
Step by Step Solution
- Step 1: Write the proportion equation
225,889.42 : 338,763.42 = 81,777.06 : x - Step 2: Convert to fraction form
225,889.42/338,763.42 = 81,777.06/x - Step 3: Cross multiply
225,889.42x = 338,763.42 × 81,777.06 - Step 4: Simplify right side
225,889.42x = 27,703,076,523.15 - Step 5: Solve for x
x = 27,703,076,523.15/225,889.42 - Step 6: Final answer
x = 122,639.99
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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.