Finding the Fourth Proportional to 216,879,392.98, 299,290,497.96 and 122,791,112.02
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Solution
The fourth proportional to 216,879,392.98, 299,290,497.96 and 122,791,112.02 is: 169,449,999.64
Step by Step Solution
- Step 1: Write the proportion equation
216,879,392.98 : 299,290,497.96 = 122,791,112.02 : x - Step 2: Convert to fraction form
216,879,392.98/299,290,497.96 = 122,791,112.02/x - Step 3: Cross multiply
216,879,392.98x = 299,290,497.96 × 122,791,112.02 - Step 4: Simplify right side
216,879,392.98x = 36,750,213,061,527,936 - Step 5: Solve for x
x = 36,750,213,061,527,936/216,879,392.98 - Step 6: Final answer
x = 169,449,999.64
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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.