Finding the Fourth Proportional to 212,206.57, 318,309.92 and 54,434.99
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Solution
The fourth proportional to 212,206.57, 318,309.92 and 54,434.99 is: 81,652.50
Step by Step Solution
- Step 1: Write the proportion equation
212,206.57 : 318,309.92 = 54,434.99 : x - Step 2: Convert to fraction form
212,206.57/318,309.92 = 54,434.99/x - Step 3: Cross multiply
212,206.57x = 318,309.92 × 54,434.99 - Step 4: Simplify right side
212,206.57x = 17,327,197,312.10 - Step 5: Solve for x
x = 17,327,197,312.10/212,206.57 - Step 6: Final answer
x = 81,652.50
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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.