Finding the Fourth Proportional to 289,041.92, 398,839.68 and 161,703.68
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Solution
The fourth proportional to 289,041.92, 398,839.68 and 161,703.68 is: 223,129.72
Step by Step Solution
- Step 1: Write the proportion equation
289,041.92 : 398,839.68 = 161,703.68 : x - Step 2: Convert to fraction form
289,041.92/398,839.68 = 161,703.68/x - Step 3: Cross multiply
289,041.92x = 398,839.68 × 161,703.68 - Step 4: Simplify right side
289,041.92x = 64,493,843,986.02 - Step 5: Solve for x
x = 64,493,843,986.02/289,041.92 - Step 6: Final answer
x = 223,129.72
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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.