Finding the Fourth Proportional to 318,791.92, 439,934.12 and 191,469.68
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Solution
The fourth proportional to 318,791.92, 439,934.12 and 191,469.68 is: 264,228.92
Step by Step Solution
- Step 1: Write the proportion equation
318,791.92 : 439,934.12 = 191,469.68 : x - Step 2: Convert to fraction form
318,791.92/439,934.12 = 191,469.68/x - Step 3: Cross multiply
318,791.92x = 439,934.12 × 191,469.68 - Step 4: Simplify right side
318,791.92x = 84,234,045,177.48 - Step 5: Solve for x
x = 84,234,045,177.48/318,791.92 - Step 6: Final answer
x = 264,228.92
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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.