Finding the Fourth Proportional to 396,502.07, 547,173.32 and 215,213.99
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Solution
The fourth proportional to 396,502.07, 547,173.32 and 215,213.99 is: 296,995.55
Step by Step Solution
- Step 1: Write the proportion equation
396,502.07 : 547,173.32 = 215,213.99 : x - Step 2: Convert to fraction form
396,502.07/547,173.32 = 215,213.99/x - Step 3: Cross multiply
396,502.07x = 547,173.32 × 215,213.99 - Step 4: Simplify right side
396,502.07x = 117,759,349,606.81 - Step 5: Solve for x
x = 117,759,349,606.81/396,502.07 - Step 6: Final answer
x = 296,995.55
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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.