Finding the Fourth Proportional to 393,742.80, 543,364.92 and 214,894.80
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Solution
The fourth proportional to 393,742.80, 543,364.92 and 214,894.80 is: 296,554.75
Step by Step Solution
- Step 1: Write the proportion equation
393,742.80 : 543,364.92 = 214,894.80 : x - Step 2: Convert to fraction form
393,742.80/543,364.92 = 214,894.80/x - Step 3: Cross multiply
393,742.80x = 543,364.92 × 214,894.80 - Step 4: Simplify right side
393,742.80x = 116,766,295,810.42 - Step 5: Solve for x
x = 116,766,295,810.42/393,742.80 - Step 6: Final answer
x = 296,554.75
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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.