Finding the Fourth Proportional to 316,720.91, 437,074.92 and 173,486.09
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Solution
The fourth proportional to 316,720.91, 437,074.92 and 173,486.09 is: 239,410.84
Step by Step Solution
- Step 1: Write the proportion equation
316,720.91 : 437,074.92 = 173,486.09 : x - Step 2: Convert to fraction form
316,720.91/437,074.92 = 173,486.09/x - Step 3: Cross multiply
316,720.91x = 437,074.92 × 173,486.09 - Step 4: Simplify right side
316,720.91x = 75,826,416,722.49 - Step 5: Solve for x
x = 75,826,416,722.49/316,720.91 - Step 6: Final answer
x = 239,410.84
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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.