Finding the Fourth Proportional to 391,469.78, 540,266.22 and 219,416.99
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Solution
The fourth proportional to 391,469.78, 540,266.22 and 219,416.99 is: 302,816.69
Step by Step Solution
- Step 1: Write the proportion equation
391,469.78 : 540,266.22 = 219,416.99 : x - Step 2: Convert to fraction form
391,469.78/540,266.22 = 219,416.99/x - Step 3: Cross multiply
391,469.78x = 540,266.22 × 219,416.99 - Step 4: Simplify right side
391,469.78x = 118,543,585,089.75 - Step 5: Solve for x
x = 118,543,585,089.75/391,469.78 - Step 6: Final answer
x = 302,816.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.