Finding the Fourth Proportional to 211,385.54, 291,711.97 and 115,890.19
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Solution
The fourth proportional to 211,385.54, 291,711.97 and 115,890.19 is: 159,928.42
Step by Step Solution
- Step 1: Write the proportion equation
211,385.54 : 291,711.97 = 115,890.19 : x - Step 2: Convert to fraction form
211,385.54/291,711.97 = 115,890.19/x - Step 3: Cross multiply
211,385.54x = 291,711.97 × 115,890.19 - Step 4: Simplify right side
211,385.54x = 33,806,555,628.57 - Step 5: Solve for x
x = 33,806,555,628.57/211,385.54 - Step 6: Final answer
x = 159,928.42
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1.5x scale
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.