Finding the Fourth Proportional to 252,129,948.31, 347,939,792.96 and 140,627,976.08
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Solution
The fourth proportional to 252,129,948.31, 347,939,792.96 and 140,627,976.08 is: 194,066,865.95
Step by Step Solution
- Step 1: Write the proportion equation
252,129,948.31 : 347,939,792.96 = 140,627,976.08 : x - Step 2: Convert to fraction form
252,129,948.31/347,939,792.96 = 140,627,976.08/x - Step 3: Cross multiply
252,129,948.31x = 347,939,792.96 × 140,627,976.08 - Step 4: Simplify right side
252,129,948.31x = 48,930,068,881,568,184 - Step 5: Solve for x
x = 48,930,068,881,568,184/252,129,948.31 - Step 6: Final answer
x = 194,066,865.95
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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.