Finding the Fourth Proportional to 251,917.76, 347,620.80 and 155,106.26
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Solution
The fourth proportional to 251,917.76, 347,620.80 and 155,106.26 is: 214,030.81
Step by Step Solution
- Step 1: Write the proportion equation
251,917.76 : 347,620.80 = 155,106.26 : x - Step 2: Convert to fraction form
251,917.76/347,620.80 = 155,106.26/x - Step 3: Cross multiply
251,917.76x = 347,620.80 × 155,106.26 - Step 4: Simplify right side
251,917.76x = 53,918,160,448.10 - Step 5: Solve for x
x = 53,918,160,448.10/251,917.76 - Step 6: Final answer
x = 214,030.81
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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.