Finding the Fourth Proportional to 212,931.46, 319,021.35 and 189,763.84
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Solution
The fourth proportional to 212,931.46, 319,021.35 and 189,763.84 is: 284,310.81
Step by Step Solution
- Step 1: Write the proportion equation
212,931.46 : 319,021.35 = 189,763.84 : x - Step 2: Convert to fraction form
212,931.46/319,021.35 = 189,763.84/x - Step 3: Cross multiply
212,931.46x = 319,021.35 × 189,763.84 - Step 4: Simplify right side
212,931.46x = 60,538,716,417.98 - Step 5: Solve for x
x = 60,538,716,417.98/212,931.46 - Step 6: Final answer
x = 284,310.81
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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.