Finding the Fourth Proportional to 228,389,511.55, 315,169,370.46 and 129,268,130.14
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Solution
The fourth proportional to 228,389,511.55, 315,169,370.46 and 129,268,130.14 is: 178,385,403.60
Step by Step Solution
- Step 1: Write the proportion equation
228,389,511.55 : 315,169,370.46 = 129,268,130.14 : x - Step 2: Convert to fraction form
228,389,511.55/315,169,370.46 = 129,268,130.14/x - Step 3: Cross multiply
228,389,511.55x = 315,169,370.46 × 129,268,130.14 - Step 4: Simplify right side
228,389,511.55x = 40,741,355,196,797,160 - Step 5: Solve for x
x = 40,741,355,196,797,160/228,389,511.55 - Step 6: Final answer
x = 178,385,403.60
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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.