Finding the Fourth Proportional to 282,437,986.08, 389,870,149.44 and 212,076,853.80
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Solution
The fourth proportional to 282,437,986.08, 389,870,149.44 and 212,076,853.80 is: 292,745,447.70
Step by Step Solution
- Step 1: Write the proportion equation
282,437,986.08 : 389,870,149.44 = 212,076,853.80 : x - Step 2: Convert to fraction form
282,437,986.08/389,870,149.44 = 212,076,853.80/x - Step 3: Cross multiply
282,437,986.08x = 389,870,149.44 × 212,076,853.80 - Step 4: Simplify right side
282,437,986.08x = 82,682,434,683,771,040 - Step 5: Solve for x
x = 82,682,434,683,771,040/282,437,986.08 - Step 6: Final answer
x = 292,745,447.70
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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.