Finding the Fourth Proportional to 318,947,101.99, 440,147,297.37 and 172,269,385.99
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Solution
The fourth proportional to 318,947,101.99, 440,147,297.37 and 172,269,385.99 is: 237,731,912.88
Step by Step Solution
- Step 1: Write the proportion equation
318,947,101.99 : 440,147,297.37 = 172,269,385.99 : x - Step 2: Convert to fraction form
318,947,101.99/440,147,297.37 = 172,269,385.99/x - Step 3: Cross multiply
318,947,101.99x = 440,147,297.37 × 172,269,385.99 - Step 4: Simplify right side
318,947,101.99x = 75,823,904,663,087,840 - Step 5: Solve for x
x = 75,823,904,663,087,840/318,947,101.99 - Step 6: Final answer
x = 237,731,912.88
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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.