Finding the Fourth Proportional to 289,171,720.62, 399,056,974.45 and 165,412,397.74
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Solution
The fourth proportional to 289,171,720.62, 399,056,974.45 and 165,412,397.74 is: 228,269,108.88
Step by Step Solution
- Step 1: Write the proportion equation
289,171,720.62 : 399,056,974.45 = 165,412,397.74 : x - Step 2: Convert to fraction form
289,171,720.62/399,056,974.45 = 165,412,397.74/x - Step 3: Cross multiply
289,171,720.62x = 399,056,974.45 × 165,412,397.74 - Step 4: Simplify right side
289,171,720.62x = 66,008,970,978,644,416 - Step 5: Solve for x
x = 66,008,970,978,644,416/289,171,720.62 - Step 6: Final answer
x = 228,269,108.88
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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.