Finding the Fourth Proportional to 219,425.36, 302,791.14 and 128,784.92
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Solution
The fourth proportional to 219,425.36, 302,791.14 and 128,784.92 is: 177,713.88
Step by Step Solution
- Step 1: Write the proportion equation
219,425.36 : 302,791.14 = 128,784.92 : x - Step 2: Convert to fraction form
219,425.36/302,791.14 = 128,784.92/x - Step 3: Cross multiply
219,425.36x = 302,791.14 × 128,784.92 - Step 4: Simplify right side
219,425.36x = 38,994,932,741.61 - Step 5: Solve for x
x = 38,994,932,741.61/219,425.36 - Step 6: Final answer
x = 177,713.88
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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.