Finding the Fourth Proportional to 211,809.14, 292,287.86 and 115,009.20
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Solution
The fourth proportional to 211,809.14, 292,287.86 and 115,009.20 is: 158,707.94
Step by Step Solution
- Step 1: Write the proportion equation
211,809.14 : 292,287.86 = 115,009.20 : x - Step 2: Convert to fraction form
211,809.14/292,287.86 = 115,009.20/x - Step 3: Cross multiply
211,809.14x = 292,287.86 × 115,009.20 - Step 4: Simplify right side
211,809.14x = 33,615,792,948.31 - Step 5: Solve for x
x = 33,615,792,948.31/211,809.14 - Step 6: Final answer
x = 158,707.94
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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.