Finding the Fourth Proportional to 298,478.71, 447,418.77 and 138,666.99
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Solution
The fourth proportional to 298,478.71, 447,418.77 and 138,666.99 is: 207,861.44
Step by Step Solution
- Step 1: Write the proportion equation
298,478.71 : 447,418.77 = 138,666.99 : x - Step 2: Convert to fraction form
298,478.71/447,418.77 = 138,666.99/x - Step 3: Cross multiply
298,478.71x = 447,418.77 × 138,666.99 - Step 4: Simplify right side
298,478.71x = 62,042,214,105.40 - Step 5: Solve for x
x = 62,042,214,105.40/298,478.71 - Step 6: Final answer
x = 207,861.44
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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.