Finding the Fourth Proportional to 485,055,263.20, 727,589,115.60 and 161,939,135.20
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Solution
The fourth proportional to 485,055,263.20, 727,589,115.60 and 161,939,135.20 is: 242,910,779.66
Step by Step Solution
- Step 1: Write the proportion equation
485,055,263.20 : 727,589,115.60 = 161,939,135.20 : x - Step 2: Convert to fraction form
485,055,263.20/727,589,115.60 = 161,939,135.20/x - Step 3: Cross multiply
485,055,263.20x = 727,589,115.60 × 161,939,135.20 - Step 4: Simplify right side
485,055,263.20x = 117,825,152,161,196,832 - Step 5: Solve for x
x = 117,825,152,161,196,832/485,055,263.20 - Step 6: Final answer
x = 242,910,779.66
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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.