Finding the Fourth Proportional to 210,831.36, 290,946.24 and 115,336.32
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Solution
The fourth proportional to 210,831.36, 290,946.24 and 115,336.32 is: 159,163.55
Step by Step Solution
- Step 1: Write the proportion equation
210,831.36 : 290,946.24 = 115,336.32 : x - Step 2: Convert to fraction form
210,831.36/290,946.24 = 115,336.32/x - Step 3: Cross multiply
210,831.36x = 290,946.24 × 115,336.32 - Step 4: Simplify right side
210,831.36x = 33,556,668,639.44 - Step 5: Solve for x
x = 33,556,668,639.44/210,831.36 - Step 6: Final answer
x = 159,163.55
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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.