Finding the Fourth Proportional to 318,609.12, 477,618.30 and 141,021.48
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Solution
The fourth proportional to 318,609.12, 477,618.30 and 141,021.48 is: 211,401.48
Step by Step Solution
- Step 1: Write the proportion equation
318,609.12 : 477,618.30 = 141,021.48 : x - Step 2: Convert to fraction form
318,609.12/477,618.30 = 141,021.48/x - Step 3: Cross multiply
318,609.12x = 477,618.30 × 141,021.48 - Step 4: Simplify right side
318,609.12x = 67,354,439,541.08 - Step 5: Solve for x
x = 67,354,439,541.08/318,609.12 - Step 6: Final answer
x = 211,401.48
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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.