Finding the Fourth Proportional to 211,523.81, 317,270.82 and 99,228.65
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Solution
The fourth proportional to 211,523.81, 317,270.82 and 99,228.65 is: 148,835.99
Step by Step Solution
- Step 1: Write the proportion equation
211,523.81 : 317,270.82 = 99,228.65 : x - Step 2: Convert to fraction form
211,523.81/317,270.82 = 99,228.65/x - Step 3: Cross multiply
211,523.81x = 317,270.82 × 99,228.65 - Step 4: Simplify right side
211,523.81x = 31,482,353,938.75 - Step 5: Solve for x
x = 31,482,353,938.75/211,523.81 - Step 6: Final answer
x = 148,835.99
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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.