Finding the Fourth Proportional to 440,129,905.20, 660,194,857.80 and 198,265,201.20
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Solution
The fourth proportional to 440,129,905.20, 660,194,857.80 and 198,265,201.20 is: 297,397,801.80
Step by Step Solution
- Step 1: Write the proportion equation
440,129,905.20 : 660,194,857.80 = 198,265,201.20 : x - Step 2: Convert to fraction form
440,129,905.20/660,194,857.80 = 198,265,201.20/x - Step 3: Cross multiply
440,129,905.20x = 660,194,857.80 × 198,265,201.20 - Step 4: Simplify right side
440,129,905.20x = 130,893,666,312,922,368 - Step 5: Solve for x
x = 130,893,666,312,922,368/440,129,905.20 - Step 6: Final answer
x = 297,397,801.80
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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.