Finding the Fourth Proportional to 318,719.26, 439,700.79 and 189,631.92
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Solution
The fourth proportional to 318,719.26, 439,700.79 and 189,631.92 is: 261,613.65
Step by Step Solution
- Step 1: Write the proportion equation
318,719.26 : 439,700.79 = 189,631.92 : x - Step 2: Convert to fraction form
318,719.26/439,700.79 = 189,631.92/x - Step 3: Cross multiply
318,719.26x = 439,700.79 × 189,631.92 - Step 4: Simplify right side
318,719.26x = 83,381,306,508.22 - Step 5: Solve for x
x = 83,381,306,508.22/318,719.26 - Step 6: Final answer
x = 261,613.65
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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.