Finding the Fourth Proportional to 230,464,785.82, 318,022,178.22 and 129,987,686.05
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Solution
The fourth proportional to 230,464,785.82, 318,022,178.22 and 129,987,686.05 is: 179,372,162.70
Step by Step Solution
- Step 1: Write the proportion equation
230,464,785.82 : 318,022,178.22 = 129,987,686.05 : x - Step 2: Convert to fraction form
230,464,785.82/318,022,178.22 = 129,987,686.05/x - Step 3: Cross multiply
230,464,785.82x = 318,022,178.22 × 129,987,686.05 - Step 4: Simplify right side
230,464,785.82x = 41,338,967,059,398,512 - Step 5: Solve for x
x = 41,338,967,059,398,512/230,464,785.82 - Step 6: Final answer
x = 179,372,162.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.