Finding the Fourth Proportional to 212,490,416.58, 318,493,844.33 and 129,308,708.38
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Solution
The fourth proportional to 212,490,416.58, 318,493,844.33 and 129,308,708.38 is: 193,815,929.67
Step by Step Solution
- Step 1: Write the proportion equation
212,490,416.58 : 318,493,844.33 = 129,308,708.38 : x - Step 2: Convert to fraction form
212,490,416.58/318,493,844.33 = 129,308,708.38/x - Step 3: Cross multiply
212,490,416.58x = 318,493,844.33 × 129,308,708.38 - Step 4: Simplify right side
212,490,416.58x = 41,184,027,635,850,304 - Step 5: Solve for x
x = 41,184,027,635,850,304/212,490,416.58 - Step 6: Final answer
x = 193,815,929.67
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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.