Finding the Fourth Proportional to 396,395.12, 547,022.50 and 215,102.44
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Solution
The fourth proportional to 396,395.12, 547,022.50 and 215,102.44 is: 296,839.87
Step by Step Solution
- Step 1: Write the proportion equation
396,395.12 : 547,022.50 = 215,102.44 : x - Step 2: Convert to fraction form
396,395.12/547,022.50 = 215,102.44/x - Step 3: Cross multiply
396,395.12x = 547,022.50 × 215,102.44 - Step 4: Simplify right side
396,395.12x = 117,665,874,484.90 - Step 5: Solve for x
x = 117,665,874,484.90/396,395.12 - Step 6: Final answer
x = 296,839.87
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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.