Finding the Fourth Proportional to 396,498.99, 547,153.94 and 215,207.02
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Solution
The fourth proportional to 396,498.99, 547,153.94 and 215,207.02 is: 296,977.73
Step by Step Solution
- Step 1: Write the proportion equation
396,498.99 : 547,153.94 = 215,207.02 : x - Step 2: Convert to fraction form
396,498.99/547,153.94 = 215,207.02/x - Step 3: Cross multiply
396,498.99x = 547,153.94 × 215,207.02 - Step 4: Simplify right side
396,498.99x = 117,751,368,078.79 - Step 5: Solve for x
x = 117,751,368,078.79/396,498.99 - Step 6: Final answer
x = 296,977.73
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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.