Finding the Fourth Proportional to 217,987.61, 300,851.09 and 122,494.31
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Solution
The fourth proportional to 217,987.61, 300,851.09 and 122,494.31 is: 169,057.99
Step by Step Solution
- Step 1: Write the proportion equation
217,987.61 : 300,851.09 = 122,494.31 : x - Step 2: Convert to fraction form
217,987.61/300,851.09 = 122,494.31/x - Step 3: Cross multiply
217,987.61x = 300,851.09 × 122,494.31 - Step 4: Simplify right side
217,987.61x = 36,852,546,682.30 - Step 5: Solve for x
x = 36,852,546,682.30/217,987.61 - Step 6: Final answer
x = 169,057.99
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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.