Finding the Fourth Proportional to 306,617.63, 423,138.80 and 172,481.63
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Solution
The fourth proportional to 306,617.63, 423,138.80 and 172,481.63 is: 238,028.29
Step by Step Solution
- Step 1: Write the proportion equation
306,617.63 : 423,138.80 = 172,481.63 : x - Step 2: Convert to fraction form
306,617.63/423,138.80 = 172,481.63/x - Step 3: Cross multiply
306,617.63x = 423,138.80 × 172,481.63 - Step 4: Simplify right side
306,617.63x = 72,983,668,255.75 - Step 5: Solve for x
x = 72,983,668,255.75/306,617.63 - Step 6: Final answer
x = 238,028.29
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.