Finding the Fourth Proportional to 205,351,498.28, 307,819,858.26 and 128,728,232.84
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Solution
The fourth proportional to 205,351,498.28, 307,819,858.26 and 128,728,232.84 is: 192,962,343.69
Step by Step Solution
- Step 1: Write the proportion equation
205,351,498.28 : 307,819,858.26 = 128,728,232.84 : x - Step 2: Convert to fraction form
205,351,498.28/307,819,858.26 = 128,728,232.84/x - Step 3: Cross multiply
205,351,498.28x = 307,819,858.26 × 128,728,232.84 - Step 4: Simplify right side
205,351,498.28x = 39,625,106,388,121,360 - Step 5: Solve for x
x = 39,625,106,388,121,360/205,351,498.28 - Step 6: Final answer
x = 192,962,343.69
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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.