Finding the Fourth Proportional to 421,170.38, 631,524.21 and 207,468.08
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Solution
The fourth proportional to 421,170.38, 631,524.21 and 207,468.08 is: 311,088.15
Step by Step Solution
- Step 1: Write the proportion equation
421,170.38 : 631,524.21 = 207,468.08 : x - Step 2: Convert to fraction form
421,170.38/631,524.21 = 207,468.08/x - Step 3: Cross multiply
421,170.38x = 631,524.21 × 207,468.08 - Step 4: Simplify right side
421,170.38x = 131,021,113,596.10 - Step 5: Solve for x
x = 131,021,113,596.10/421,170.38 - Step 6: Final answer
x = 311,088.15
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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.