Finding the Fourth Proportional to 309,577,868.09, 427,204,564.12 and 168,449,642.72
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Solution
The fourth proportional to 309,577,868.09, 427,204,564.12 and 168,449,642.72 is: 232,453,491.07
Step by Step Solution
- Step 1: Write the proportion equation
309,577,868.09 : 427,204,564.12 = 168,449,642.72 : x - Step 2: Convert to fraction form
309,577,868.09/427,204,564.12 = 168,449,642.72/x - Step 3: Cross multiply
309,577,868.09x = 427,204,564.12 × 168,449,642.72 - Step 4: Simplify right side
309,577,868.09x = 71,962,456,194,043,880 - Step 5: Solve for x
x = 71,962,456,194,043,880/309,577,868.09 - Step 6: Final answer
x = 232,453,491.07
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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.