Finding the Fourth Proportional to 212,744,693.56, 318,462,528.18 and 138,809,272.72
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Solution
The fourth proportional to 212,744,693.56, 318,462,528.18 and 138,809,272.72 is: 207,786,860.32
Step by Step Solution
- Step 1: Write the proportion equation
212,744,693.56 : 318,462,528.18 = 138,809,272.72 : x - Step 2: Convert to fraction form
212,744,693.56/318,462,528.18 = 138,809,272.72/x - Step 3: Cross multiply
212,744,693.56x = 318,462,528.18 × 138,809,272.72 - Step 4: Simplify right side
212,744,693.56x = 44,205,551,925,238,304 - Step 5: Solve for x
x = 44,205,551,925,238,304/212,744,693.56 - Step 6: Final answer
x = 207,786,860.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.