Finding the Fourth Proportional to 318,216.76, 439,232.16 and 189,245.92
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Solution
The fourth proportional to 318,216.76, 439,232.16 and 189,245.92 is: 261,214.70
Step by Step Solution
- Step 1: Write the proportion equation
318,216.76 : 439,232.16 = 189,245.92 : x - Step 2: Convert to fraction form
318,216.76/439,232.16 = 189,245.92/x - Step 3: Cross multiply
318,216.76x = 439,232.16 × 189,245.92 - Step 4: Simplify right side
318,216.76x = 83,122,894,212.79 - Step 5: Solve for x
x = 83,122,894,212.79/318,216.76 - Step 6: Final answer
x = 261,214.70
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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.