Finding the Fourth Proportional to 201,811.80, 302,717.70 and 139,603.80
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Solution
The fourth proportional to 201,811.80, 302,717.70 and 139,603.80 is: 209,405.70
Step by Step Solution
- Step 1: Write the proportion equation
201,811.80 : 302,717.70 = 139,603.80 : x - Step 2: Convert to fraction form
201,811.80/302,717.70 = 139,603.80/x - Step 3: Cross multiply
201,811.80x = 302,717.70 × 139,603.80 - Step 4: Simplify right side
201,811.80x = 42,260,541,247.26 - Step 5: Solve for x
x = 42,260,541,247.26/201,811.80 - Step 6: Final answer
x = 209,405.70
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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.