Finding the Fourth Proportional to 290,811.28, 436,217.08 and 132,929.02
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Solution
The fourth proportional to 290,811.28, 436,217.08 and 132,929.02 is: 199,393.60
Step by Step Solution
- Step 1: Write the proportion equation
290,811.28 : 436,217.08 = 132,929.02 : x - Step 2: Convert to fraction form
290,811.28/436,217.08 = 132,929.02/x - Step 3: Cross multiply
290,811.28x = 436,217.08 × 132,929.02 - Step 4: Simplify right side
290,811.28x = 57,985,906,960.13 - Step 5: Solve for x
x = 57,985,906,960.13/290,811.28 - Step 6: Final answer
x = 199,393.60
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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.