Finding the Fourth Proportional to 216,921.36, 299,460.16 and 136,393.18
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Solution
The fourth proportional to 216,921.36, 299,460.16 and 136,393.18 is: 188,290.92
Step by Step Solution
- Step 1: Write the proportion equation
216,921.36 : 299,460.16 = 136,393.18 : x - Step 2: Convert to fraction form
216,921.36/299,460.16 = 136,393.18/x - Step 3: Cross multiply
216,921.36x = 299,460.16 × 136,393.18 - Step 4: Simplify right side
216,921.36x = 40,844,323,505.71 - Step 5: Solve for x
x = 40,844,323,505.71/216,921.36 - Step 6: Final answer
x = 188,290.92
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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.