Finding the Fourth Proportional to 293,419,429.20, 440,129,143.80 and 207,325,987.20
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Solution
The fourth proportional to 293,419,429.20, 440,129,143.80 and 207,325,987.20 is: 310,988,980.80
Step by Step Solution
- Step 1: Write the proportion equation
293,419,429.20 : 440,129,143.80 = 207,325,987.20 : x - Step 2: Convert to fraction form
293,419,429.20/440,129,143.80 = 207,325,987.20/x - Step 3: Cross multiply
293,419,429.20x = 440,129,143.80 × 207,325,987.20 - Step 4: Simplify right side
293,419,429.20x = 91,250,209,233,825,760 - Step 5: Solve for x
x = 91,250,209,233,825,760/293,419,429.20 - Step 6: Final answer
x = 310,988,980.80
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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.