Finding the Fourth Proportional to 290,995,937.16, 401,514,446.70 and 167,212,699.44
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Solution
The fourth proportional to 290,995,937.16, 401,514,446.70 and 167,212,699.44 is: 230,719,078.60
Step by Step Solution
- Step 1: Write the proportion equation
290,995,937.16 : 401,514,446.70 = 167,212,699.44 : x - Step 2: Convert to fraction form
290,995,937.16/401,514,446.70 = 167,212,699.44/x - Step 3: Cross multiply
290,995,937.16x = 401,514,446.70 × 167,212,699.44 - Step 4: Simplify right side
290,995,937.16x = 67,138,314,496,865,000 - Step 5: Solve for x
x = 67,138,314,496,865,000/290,995,937.16 - Step 6: Final answer
x = 230,719,078.60
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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.