Finding the Fourth Proportional to 209,615,280.99, 289,270,234.92 and 121,561,485.63
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Solution
The fourth proportional to 209,615,280.99, 289,270,234.92 and 121,561,485.63 is: 167,755,515.43
Step by Step Solution
- Step 1: Write the proportion equation
209,615,280.99 : 289,270,234.92 = 121,561,485.63 : x - Step 2: Convert to fraction form
209,615,280.99/289,270,234.92 = 121,561,485.63/x - Step 3: Cross multiply
209,615,280.99x = 289,270,234.92 × 121,561,485.63 - Step 4: Simplify right side
209,615,280.99x = 35,164,119,505,414,304 - Step 5: Solve for x
x = 35,164,119,505,414,304/209,615,280.99 - Step 6: Final answer
x = 167,755,515.43
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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.