Finding the Fourth Proportional to 396,670.74, 547,415.12 and 215,390.31
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Solution
The fourth proportional to 396,670.74, 547,415.12 and 215,390.31 is: 297,243.79
Step by Step Solution
- Step 1: Write the proportion equation
396,670.74 : 547,415.12 = 215,390.31 : x - Step 2: Convert to fraction form
396,670.74/547,415.12 = 215,390.31/x - Step 3: Cross multiply
396,670.74x = 547,415.12 × 215,390.31 - Step 4: Simplify right side
396,670.74x = 117,907,912,395.49 - Step 5: Solve for x
x = 117,907,912,395.49/396,670.74 - Step 6: Final answer
x = 297,243.79
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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.