Finding the Fourth Proportional to 387,903,589.20, 535,318,291.26 and 211,702,893.03
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Solution
The fourth proportional to 387,903,589.20, 535,318,291.26 and 211,702,893.03 is: 292,156,180.32
Step by Step Solution
- Step 1: Write the proportion equation
387,903,589.20 : 535,318,291.26 = 211,702,893.03 : x - Step 2: Convert to fraction form
387,903,589.20/535,318,291.26 = 211,702,893.03/x - Step 3: Cross multiply
387,903,589.20x = 535,318,291.26 × 211,702,893.03 - Step 4: Simplify right side
387,903,589.20x = 113,328,430,951,618,160 - Step 5: Solve for x
x = 113,328,430,951,618,160/387,903,589.20 - Step 6: Final answer
x = 292,156,180.32
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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.