Finding the Fourth Proportional to 257,243.75, 385,880.19 and 79,775.99
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Solution
The fourth proportional to 257,243.75, 385,880.19 and 79,775.99 is: 119,668.50
Step by Step Solution
- Step 1: Write the proportion equation
257,243.75 : 385,880.19 = 79,775.99 : x - Step 2: Convert to fraction form
257,243.75/385,880.19 = 79,775.99/x - Step 3: Cross multiply
257,243.75x = 385,880.19 × 79,775.99 - Step 4: Simplify right side
257,243.75x = 30,783,972,249.24 - Step 5: Solve for x
x = 30,783,972,249.24/257,243.75 - Step 6: Final answer
x = 119,668.50
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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.