Finding the Fourth Proportional to 291,156,108.80, 436,734,163.20 and 138,101,100.80
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Solution
The fourth proportional to 291,156,108.80, 436,734,163.20 and 138,101,100.80 is: 207,151,651.20
Step by Step Solution
- Step 1: Write the proportion equation
291,156,108.80 : 436,734,163.20 = 138,101,100.80 : x - Step 2: Convert to fraction form
291,156,108.80/436,734,163.20 = 138,101,100.80/x - Step 3: Cross multiply
291,156,108.80x = 436,734,163.20 × 138,101,100.80 - Step 4: Simplify right side
291,156,108.80x = 60,313,468,694,886,856 - Step 5: Solve for x
x = 60,313,468,694,886,856/291,156,108.80 - Step 6: Final answer
x = 207,151,651.20
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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.