Finding the Fourth Proportional to 318,126.49, 477,115.92 and 140,536.62
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Solution
The fourth proportional to 318,126.49, 477,115.92 and 140,536.62 is: 210,772.32
Step by Step Solution
- Step 1: Write the proportion equation
318,126.49 : 477,115.92 = 140,536.62 : x - Step 2: Convert to fraction form
318,126.49/477,115.92 = 140,536.62/x - Step 3: Cross multiply
318,126.49x = 477,115.92 × 140,536.62 - Step 4: Simplify right side
318,126.49x = 67,052,258,744.99 - Step 5: Solve for x
x = 67,052,258,744.99/318,126.49 - Step 6: Final answer
x = 210,772.32
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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.