Finding the Fourth Proportional to 397,169.76, 548,358.20 and 305,125.12
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Solution
The fourth proportional to 397,169.76, 548,358.20 and 305,125.12 is: 421,275.43
Step by Step Solution
- Step 1: Write the proportion equation
397,169.76 : 548,358.20 = 305,125.12 : x - Step 2: Convert to fraction form
397,169.76/548,358.20 = 305,125.12/x - Step 3: Cross multiply
397,169.76x = 548,358.20 × 305,125.12 - Step 4: Simplify right side
397,169.76x = 167,317,861,577.98 - Step 5: Solve for x
x = 167,317,861,577.98/397,169.76 - Step 6: Final answer
x = 421,275.43
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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.