Finding the Fourth Proportional to 243,037,387.71, 335,393,685.18 and 138,620,745.63
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Solution
The fourth proportional to 243,037,387.71, 335,393,685.18 and 138,620,745.63 is: 191,297,821.12
Step by Step Solution
- Step 1: Write the proportion equation
243,037,387.71 : 335,393,685.18 = 138,620,745.63 : x - Step 2: Convert to fraction form
243,037,387.71/335,393,685.18 = 138,620,745.63/x - Step 3: Cross multiply
243,037,387.71x = 335,393,685.18 × 138,620,745.63 - Step 4: Simplify right side
243,037,387.71x = 46,492,522,719,245,080 - Step 5: Solve for x
x = 46,492,522,719,245,080/243,037,387.71 - Step 6: Final answer
x = 191,297,821.12
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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.