Finding the Fourth Proportional to 201,605.40, 302,408.10 and 138,619.80
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Solution
The fourth proportional to 201,605.40, 302,408.10 and 138,619.80 is: 207,929.70
Step by Step Solution
- Step 1: Write the proportion equation
201,605.40 : 302,408.10 = 138,619.80 : x - Step 2: Convert to fraction form
201,605.40/302,408.10 = 138,619.80/x - Step 3: Cross multiply
201,605.40x = 302,408.10 × 138,619.80 - Step 4: Simplify right side
201,605.40x = 41,919,750,340.38 - Step 5: Solve for x
x = 41,919,750,340.38/201,605.40 - Step 6: Final answer
x = 207,929.70
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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.