Finding the Fourth Proportional to 216,887,680.80, 325,331,521.20 and 73,278,439.20
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Solution
The fourth proportional to 216,887,680.80, 325,331,521.20 and 73,278,439.20 is: 109,917,658.80
Step by Step Solution
- Step 1: Write the proportion equation
216,887,680.80 : 325,331,521.20 = 73,278,439.20 : x - Step 2: Convert to fraction form
216,887,680.80/325,331,521.20 = 73,278,439.20/x - Step 3: Cross multiply
216,887,680.80x = 325,331,521.20 × 73,278,439.20 - Step 4: Simplify right side
216,887,680.80x = 23,839,786,096,097,712 - Step 5: Solve for x
x = 23,839,786,096,097,712/216,887,680.80 - Step 6: Final answer
x = 109,917,658.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.