Finding the Fourth Proportional to 201,812.80, 302,719.20 and 138,827.20
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Solution
The fourth proportional to 201,812.80, 302,719.20 and 138,827.20 is: 208,240.80
Step by Step Solution
- Step 1: Write the proportion equation
201,812.80 : 302,719.20 = 138,827.20 : x - Step 2: Convert to fraction form
201,812.80/302,719.20 = 138,827.20/x - Step 3: Cross multiply
201,812.80x = 302,719.20 × 138,827.20 - Step 4: Simplify right side
201,812.80x = 42,025,658,922.24 - Step 5: Solve for x
x = 42,025,658,922.24/201,812.80 - Step 6: Final answer
x = 208,240.80
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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.