Finding the Fourth Proportional to 212,867.70, 318,893.30 and 119,439.06
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Solution
The fourth proportional to 212,867.70, 318,893.30 and 119,439.06 is: 178,929.52
Step by Step Solution
- Step 1: Write the proportion equation
212,867.70 : 318,893.30 = 119,439.06 : x - Step 2: Convert to fraction form
212,867.70/318,893.30 = 119,439.06/x - Step 3: Cross multiply
212,867.70x = 318,893.30 × 119,439.06 - Step 4: Simplify right side
212,867.70x = 38,088,315,992.30 - Step 5: Solve for x
x = 38,088,315,992.30/212,867.70 - Step 6: Final answer
x = 178,929.52
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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.