Finding the Fourth Proportional to 355,423,715.62, 490,481,101.29 and 198,790,448.74
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Solution
The fourth proportional to 355,423,715.62, 490,481,101.29 and 198,790,448.74 is: 274,328,791.07
Step by Step Solution
- Step 1: Write the proportion equation
355,423,715.62 : 490,481,101.29 = 198,790,448.74 : x - Step 2: Convert to fraction form
355,423,715.62/490,481,101.29 = 198,790,448.74/x - Step 3: Cross multiply
355,423,715.62x = 490,481,101.29 × 198,790,448.74 - Step 4: Simplify right side
355,423,715.62x = 97,502,958,223,928,496 - Step 5: Solve for x
x = 97,502,958,223,928,496/355,423,715.62 - Step 6: Final answer
x = 274,328,791.07
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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.