Finding the Fourth Proportional to 402,268,129.20, 603,402,193.80 and 143,775,226.80
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Solution
The fourth proportional to 402,268,129.20, 603,402,193.80 and 143,775,226.80 is: 215,662,840.20
Step by Step Solution
- Step 1: Write the proportion equation
402,268,129.20 : 603,402,193.80 = 143,775,226.80 : x - Step 2: Convert to fraction form
402,268,129.20/603,402,193.80 = 143,775,226.80/x - Step 3: Cross multiply
402,268,129.20x = 603,402,193.80 × 143,775,226.80 - Step 4: Simplify right side
402,268,129.20x = 86,754,287,265,212,560 - Step 5: Solve for x
x = 86,754,287,265,212,560/402,268,129.20 - Step 6: Final answer
x = 215,662,840.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.