Finding the Fourth Proportional to 210,785.36, 290,881.68 and 115,293.92
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Solution
The fourth proportional to 210,785.36, 290,881.68 and 115,293.92 is: 159,104.45
Step by Step Solution
- Step 1: Write the proportion equation
210,785.36 : 290,881.68 = 115,293.92 : x - Step 2: Convert to fraction form
210,785.36/290,881.68 = 115,293.92/x - Step 3: Cross multiply
210,785.36x = 290,881.68 × 115,293.92 - Step 4: Simplify right side
210,785.36x = 33,536,889,143.39 - Step 5: Solve for x
x = 33,536,889,143.39/210,785.36 - Step 6: Final answer
x = 159,104.45
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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.