Finding the Fourth Proportional to 279,936,346.90, 419,904,520.35 and 192,638,305.30
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Solution
The fourth proportional to 279,936,346.90, 419,904,520.35 and 192,638,305.30 is: 288,957,457.95
Step by Step Solution
- Step 1: Write the proportion equation
279,936,346.90 : 419,904,520.35 = 192,638,305.30 : x - Step 2: Convert to fraction form
279,936,346.90/419,904,520.35 = 192,638,305.30/x - Step 3: Cross multiply
279,936,346.90x = 419,904,520.35 × 192,638,305.30 - Step 4: Simplify right side
279,936,346.90x = 80,889,695,188,033,376 - Step 5: Solve for x
x = 80,889,695,188,033,376/279,936,346.90 - Step 6: Final answer
x = 288,957,457.95
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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.