Finding the Fourth Proportional to 440,122,417.20, 660,183,625.80 and 210,539,905.20
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Solution
The fourth proportional to 440,122,417.20, 660,183,625.80 and 210,539,905.20 is: 315,809,857.80
Step by Step Solution
- Step 1: Write the proportion equation
440,122,417.20 : 660,183,625.80 = 210,539,905.20 : x - Step 2: Convert to fraction form
440,122,417.20/660,183,625.80 = 210,539,905.20/x - Step 3: Cross multiply
440,122,417.20x = 660,183,625.80 × 210,539,905.20 - Step 4: Simplify right side
440,122,417.20x = 138,994,997,990,524,256 - Step 5: Solve for x
x = 138,994,997,990,524,256/440,122,417.20 - Step 6: Final answer
x = 315,809,857.80
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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.