Finding the Fourth Proportional to 312,391,057.38, 431,090,325.61 and 171,257,451.99
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Solution
The fourth proportional to 312,391,057.38, 431,090,325.61 and 171,257,451.99 is: 236,330,166.94
Step by Step Solution
- Step 1: Write the proportion equation
312,391,057.38 : 431,090,325.61 = 171,257,451.99 : x - Step 2: Convert to fraction form
312,391,057.38/431,090,325.61 = 171,257,451.99/x - Step 3: Cross multiply
312,391,057.38x = 431,090,325.61 × 171,257,451.99 - Step 4: Simplify right side
312,391,057.38x = 73,827,430,741,508,048 - Step 5: Solve for x
x = 73,827,430,741,508,048/312,391,057.38 - Step 6: Final answer
x = 236,330,166.94
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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.