Finding the Fourth Proportional to 289,448.93, 399,435.14 and 162,129.08
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Solution
The fourth proportional to 289,448.93, 399,435.14 and 162,129.08 is: 223,735.67
Step by Step Solution
- Step 1: Write the proportion equation
289,448.93 : 399,435.14 = 162,129.08 : x - Step 2: Convert to fraction form
289,448.93/399,435.14 = 162,129.08/x - Step 3: Cross multiply
289,448.93x = 399,435.14 × 162,129.08 - Step 4: Simplify right side
289,448.93x = 64,760,048,960.05 - Step 5: Solve for x
x = 64,760,048,960.05/289,448.93 - Step 6: Final answer
x = 223,735.67
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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.