Finding the Fourth Proportional to 393,680.76, 543,281.58 and 221,602.02
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Solution
The fourth proportional to 393,680.76, 543,281.58 and 221,602.02 is: 305,811.99
Step by Step Solution
- Step 1: Write the proportion equation
393,680.76 : 543,281.58 = 221,602.02 : x - Step 2: Convert to fraction form
393,680.76/543,281.58 = 221,602.02/x - Step 3: Cross multiply
393,680.76x = 543,281.58 × 221,602.02 - Step 4: Simplify right side
393,680.76x = 120,392,295,556.79 - Step 5: Solve for x
x = 120,392,295,556.79/393,680.76 - Step 6: Final answer
x = 305,811.99
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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.