Finding the Fourth Proportional to 399,401.21, 599,107.12 and 133,161.81
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Solution
The fourth proportional to 399,401.21, 599,107.12 and 133,161.81 is: 199,744.48
Step by Step Solution
- Step 1: Write the proportion equation
399,401.21 : 599,107.12 = 133,161.81 : x - Step 2: Convert to fraction form
399,401.21/599,107.12 = 133,161.81/x - Step 3: Cross multiply
399,401.21x = 599,107.12 × 133,161.81 - Step 4: Simplify right side
399,401.21x = 79,778,188,483.09 - Step 5: Solve for x
x = 79,778,188,483.09/399,401.21 - Step 6: Final answer
x = 199,744.48
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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.