Finding the Fourth Proportional to 211,779.49, 317,575.98 and 99,491.62
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Solution
The fourth proportional to 211,779.49, 317,575.98 and 99,491.62 is: 149,193.62
Step by Step Solution
- Step 1: Write the proportion equation
211,779.49 : 317,575.98 = 99,491.62 : x - Step 2: Convert to fraction form
211,779.49/317,575.98 = 99,491.62/x - Step 3: Cross multiply
211,779.49x = 317,575.98 × 99,491.62 - Step 4: Simplify right side
211,779.49x = 31,596,148,723.29 - Step 5: Solve for x
x = 31,596,148,723.29/211,779.49 - Step 6: Final answer
x = 149,193.62
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.