Finding the Fourth Proportional to 209,279,010.48, 288,802,742.48 and 115,191,145.80
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Solution
The fourth proportional to 209,279,010.48, 288,802,742.48 and 115,191,145.80 is: 158,962,519.65
Step by Step Solution
- Step 1: Write the proportion equation
209,279,010.48 : 288,802,742.48 = 115,191,145.80 : x - Step 2: Convert to fraction form
209,279,010.48/288,802,742.48 = 115,191,145.80/x - Step 3: Cross multiply
209,279,010.48x = 288,802,742.48 × 115,191,145.80 - Step 4: Simplify right side
209,279,010.48x = 33,267,518,815,877,580 - Step 5: Solve for x
x = 33,267,518,815,877,580/209,279,010.48 - Step 6: Final answer
x = 158,962,519.65
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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.