Finding the Fourth Proportional to 355,423,731.12, 490,481,122.68 and 198,790,464.24
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Solution
The fourth proportional to 355,423,731.12, 490,481,122.68 and 198,790,464.24 is: 274,328,812.46
Step by Step Solution
- Step 1: Write the proportion equation
355,423,731.12 : 490,481,122.68 = 198,790,464.24 : x - Step 2: Convert to fraction form
355,423,731.12/490,481,122.68 = 198,790,464.24/x - Step 3: Cross multiply
355,423,731.12x = 490,481,122.68 × 198,790,464.24 - Step 4: Simplify right side
355,423,731.12x = 97,502,970,078,513,600 - Step 5: Solve for x
x = 97,502,970,078,513,600/355,423,731.12 - Step 6: Final answer
x = 274,328,812.46
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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.