Finding the Fourth Proportional to 396,607.96, 547,319.64 and 215,319.88
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Solution
The fourth proportional to 396,607.96, 547,319.64 and 215,319.88 is: 297,141.79
Step by Step Solution
- Step 1: Write the proportion equation
396,607.96 : 547,319.64 = 215,319.88 : x - Step 2: Convert to fraction form
396,607.96/547,319.64 = 215,319.88/x - Step 3: Cross multiply
396,607.96x = 547,319.64 × 215,319.88 - Step 4: Simplify right side
396,607.96x = 117,848,799,206.44 - Step 5: Solve for x
x = 117,848,799,206.44/396,607.96 - Step 6: Final answer
x = 297,141.79
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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.