Finding the Fourth Proportional to 235,644.36, 325,190.62 and 128,215.14
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Solution
The fourth proportional to 235,644.36, 325,190.62 and 128,215.14 is: 176,937.66
Step by Step Solution
- Step 1: Write the proportion equation
235,644.36 : 325,190.62 = 128,215.14 : x - Step 2: Convert to fraction form
235,644.36/325,190.62 = 128,215.14/x - Step 3: Cross multiply
235,644.36x = 325,190.62 × 128,215.14 - Step 4: Simplify right side
235,644.36x = 41,694,360,869.99 - Step 5: Solve for x
x = 41,694,360,869.99/235,644.36 - Step 6: Final answer
x = 176,937.66
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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.