Finding the Fourth Proportional to 213,143.20, 294,116.58 and 117,643.68
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Solution
The fourth proportional to 213,143.20, 294,116.58 and 117,643.68 is: 162,336.67
Step by Step Solution
- Step 1: Write the proportion equation
213,143.20 : 294,116.58 = 117,643.68 : x - Step 2: Convert to fraction form
213,143.20/294,116.58 = 117,643.68/x - Step 3: Cross multiply
213,143.20x = 294,116.58 × 117,643.68 - Step 4: Simplify right side
213,143.20x = 34,600,956,820.21 - Step 5: Solve for x
x = 34,600,956,820.21/213,143.20 - Step 6: Final answer
x = 162,336.67
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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.