Finding the Fourth Proportional to 256,519,797.11, 353,987,836.27 and 139,042,605.08
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Solution
The fourth proportional to 256,519,797.11, 353,987,836.27 and 139,042,605.08 is: 191,873,654.49
Step by Step Solution
- Step 1: Write the proportion equation
256,519,797.11 : 353,987,836.27 = 139,042,605.08 : x - Step 2: Convert to fraction form
256,519,797.11/353,987,836.27 = 139,042,605.08/x - Step 3: Cross multiply
256,519,797.11x = 353,987,836.27 × 139,042,605.08 - Step 4: Simplify right side
256,519,797.11x = 49,219,390,919,495,760 - Step 5: Solve for x
x = 49,219,390,919,495,760/256,519,797.11 - Step 6: Final answer
x = 191,873,654.49
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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.