Finding the Fourth Proportional to 393,757,231.97, 543,390,680.04 and 217,549,283.60
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Solution
The fourth proportional to 393,757,231.97, 543,390,680.04 and 217,549,283.60 is: 300,221,160.55
Step by Step Solution
- Step 1: Write the proportion equation
393,757,231.97 : 543,390,680.04 = 217,549,283.60 : x - Step 2: Convert to fraction form
393,757,231.97/543,390,680.04 = 217,549,283.60/x - Step 3: Cross multiply
393,757,231.97x = 543,390,680.04 × 217,549,283.60 - Step 4: Simplify right side
393,757,231.97x = 118,214,253,157,618,800 - Step 5: Solve for x
x = 118,214,253,157,618,800/393,757,231.97 - Step 6: Final answer
x = 300,221,160.55
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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.