Finding the Fourth Proportional to 262,440,312.80, 393,660,469.20 and 194,415,864.80
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Solution
The fourth proportional to 262,440,312.80, 393,660,469.20 and 194,415,864.80 is: 291,623,797.20
Step by Step Solution
- Step 1: Write the proportion equation
262,440,312.80 : 393,660,469.20 = 194,415,864.80 : x - Step 2: Convert to fraction form
262,440,312.80/393,660,469.20 = 194,415,864.80/x - Step 3: Cross multiply
262,440,312.80x = 393,660,469.20 × 194,415,864.80 - Step 4: Simplify right side
262,440,312.80x = 76,533,840,557,091,760 - Step 5: Solve for x
x = 76,533,840,557,091,760/262,440,312.80 - Step 6: Final answer
x = 291,623,797.20
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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.