Finding the Fourth Proportional to 429,747.09, 644,219.97 and 145,238.70
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Solution
The fourth proportional to 429,747.09, 644,219.97 and 145,238.70 is: 217,722.64
Step by Step Solution
- Step 1: Write the proportion equation
429,747.09 : 644,219.97 = 145,238.70 : x - Step 2: Convert to fraction form
429,747.09/644,219.97 = 145,238.70/x - Step 3: Cross multiply
429,747.09x = 644,219.97 × 145,238.70 - Step 4: Simplify right side
429,747.09x = 93,565,670,956.84 - Step 5: Solve for x
x = 93,565,670,956.84/429,747.09 - Step 6: Final answer
x = 217,722.64
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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.