Finding the Fourth Proportional to 388,471,589.83, 536,074,841.55 and 212,265,634.06
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Solution
The fourth proportional to 388,471,589.83, 536,074,841.55 and 212,265,634.06 is: 292,917,858.41
Step by Step Solution
- Step 1: Write the proportion equation
388,471,589.83 : 536,074,841.55 = 212,265,634.06 : x - Step 2: Convert to fraction form
388,471,589.83/536,074,841.55 = 212,265,634.06/x - Step 3: Cross multiply
388,471,589.83x = 536,074,841.55 × 212,265,634.06 - Step 4: Simplify right side
388,471,589.83x = 113,790,266,145,224,784 - Step 5: Solve for x
x = 113,790,266,145,224,784/388,471,589.83 - Step 6: Final answer
x = 292,917,858.41
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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.