Finding the Fourth Proportional to 212,771.87, 293,621.68 and 117,287.45
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Solution
The fourth proportional to 212,771.87, 293,621.68 and 117,287.45 is: 161,854.75
Step by Step Solution
- Step 1: Write the proportion equation
212,771.87 : 293,621.68 = 117,287.45 : x - Step 2: Convert to fraction form
212,771.87/293,621.68 = 117,287.45/x - Step 3: Cross multiply
212,771.87x = 293,621.68 × 117,287.45 - Step 4: Simplify right side
212,771.87x = 34,438,138,111.92 - Step 5: Solve for x
x = 34,438,138,111.92/212,771.87 - Step 6: Final answer
x = 161,854.75
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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.