Finding the Fourth Proportional to 260,911.63, 391,423.24 and 80,993.12
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Solution
The fourth proportional to 260,911.63, 391,423.24 and 80,993.12 is: 121,506.99
Step by Step Solution
- Step 1: Write the proportion equation
260,911.63 : 391,423.24 = 80,993.12 : x - Step 2: Convert to fraction form
260,911.63/391,423.24 = 80,993.12/x - Step 3: Cross multiply
260,911.63x = 391,423.24 × 80,993.12 - Step 4: Simplify right side
260,911.63x = 31,702,587,136.65 - Step 5: Solve for x
x = 31,702,587,136.65/260,911.63 - Step 6: Final answer
x = 121,506.99
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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.