Finding the Fourth Proportional to 309,485,809.74, 427,093,943.76 and 177,324,153.15
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Solution
The fourth proportional to 309,485,809.74, 427,093,943.76 and 177,324,153.15 is: 244,709,351.80
Step by Step Solution
- Step 1: Write the proportion equation
309,485,809.74 : 427,093,943.76 = 177,324,153.15 : x - Step 2: Convert to fraction form
309,485,809.74/427,093,943.76 = 177,324,153.15/x - Step 3: Cross multiply
309,485,809.74x = 427,093,943.76 × 177,324,153.15 - Step 4: Simplify right side
309,485,809.74x = 75,734,071,892,735,728 - Step 5: Solve for x
x = 75,734,071,892,735,728/309,485,809.74 - Step 6: Final answer
x = 244,709,351.80
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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.