Finding the Fourth Proportional to 212,654,990.44, 293,268,861.24 and 145,771,147.68
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Solution
The fourth proportional to 212,654,990.44, 293,268,861.24 and 145,771,147.68 is: 201,030,497.31
Step by Step Solution
- Step 1: Write the proportion equation
212,654,990.44 : 293,268,861.24 = 145,771,147.68 : x - Step 2: Convert to fraction form
212,654,990.44/293,268,861.24 = 145,771,147.68/x - Step 3: Cross multiply
212,654,990.44x = 293,268,861.24 × 145,771,147.68 - Step 4: Simplify right side
212,654,990.44x = 42,750,138,482,582,472 - Step 5: Solve for x
x = 42,750,138,482,582,472/212,654,990.44 - Step 6: Final answer
x = 201,030,497.31
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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.