Finding the Fourth Proportional to 211,380.40, 291,723.33 and 115,905.70
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Solution
The fourth proportional to 211,380.40, 291,723.33 and 115,905.70 is: 159,959.94
Step by Step Solution
- Step 1: Write the proportion equation
211,380.40 : 291,723.33 = 115,905.70 : x - Step 2: Convert to fraction form
211,380.40/291,723.33 = 115,905.70/x - Step 3: Cross multiply
211,380.40x = 291,723.33 × 115,905.70 - Step 4: Simplify right side
211,380.40x = 33,812,396,769.98 - Step 5: Solve for x
x = 33,812,396,769.98/211,380.40 - Step 6: Final answer
x = 159,959.94
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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.