Finding the Fourth Proportional to 211,379.84, 291,687.99 and 120,723.29
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Solution
The fourth proportional to 211,379.84, 291,687.99 and 120,723.29 is: 166,588.89
Step by Step Solution
- Step 1: Write the proportion equation
211,379.84 : 291,687.99 = 120,723.29 : x - Step 2: Convert to fraction form
211,379.84/291,687.99 = 120,723.29/x - Step 3: Cross multiply
211,379.84x = 291,687.99 × 120,723.29 - Step 4: Simplify right side
211,379.84x = 35,213,533,806.29 - Step 5: Solve for x
x = 35,213,533,806.29/211,379.84 - Step 6: Final answer
x = 166,588.89
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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.