Finding the Fourth Proportional to 391,865.09, 587,964.05 and 214,164.50
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Solution
The fourth proportional to 391,865.09, 587,964.05 and 214,164.50 is: 321,337.70
Step by Step Solution
- Step 1: Write the proportion equation
391,865.09 : 587,964.05 = 214,164.50 : x - Step 2: Convert to fraction form
391,865.09/587,964.05 = 214,164.50/x - Step 3: Cross multiply
391,865.09x = 587,964.05 × 214,164.50 - Step 4: Simplify right side
391,865.09x = 125,921,025,715.40 - Step 5: Solve for x
x = 125,921,025,715.40/391,865.09 - Step 6: Final answer
x = 321,337.70
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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.