Finding the Fourth Proportional to 217,295.20, 299,861.60 and 121,808.08
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Solution
The fourth proportional to 217,295.20, 299,861.60 and 121,808.08 is: 168,091.91
Step by Step Solution
- Step 1: Write the proportion equation
217,295.20 : 299,861.60 = 121,808.08 : x - Step 2: Convert to fraction form
217,295.20/299,861.60 = 121,808.08/x - Step 3: Cross multiply
217,295.20x = 299,861.60 × 121,808.08 - Step 4: Simplify right side
217,295.20x = 36,525,565,761.73 - Step 5: Solve for x
x = 36,525,565,761.73/217,295.20 - Step 6: Final answer
x = 168,091.91
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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.