Finding the Fourth Proportional to 231,370,879.72, 319,292,420.44 and 125,524,289.60
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Solution
The fourth proportional to 231,370,879.72, 319,292,420.44 and 125,524,289.60 is: 173,223,848.65
Step by Step Solution
- Step 1: Write the proportion equation
231,370,879.72 : 319,292,420.44 = 125,524,289.60 : x - Step 2: Convert to fraction form
231,370,879.72/319,292,420.44 = 125,524,289.60/x - Step 3: Cross multiply
231,370,879.72x = 319,292,420.44 × 125,524,289.60 - Step 4: Simplify right side
231,370,879.72x = 40,078,954,250,395,520 - Step 5: Solve for x
x = 40,078,954,250,395,520/231,370,879.72 - Step 6: Final answer
x = 173,223,848.65
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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.