Finding the Fourth Proportional to 390,144.26, 538,399.08 and 211,296.26
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Solution
The fourth proportional to 390,144.26, 538,399.08 and 211,296.26 is: 291,588.84
Step by Step Solution
- Step 1: Write the proportion equation
390,144.26 : 538,399.08 = 211,296.26 : x - Step 2: Convert to fraction form
390,144.26/538,399.08 = 211,296.26/x - Step 3: Cross multiply
390,144.26x = 538,399.08 × 211,296.26 - Step 4: Simplify right side
390,144.26x = 113,761,711,991.44 - Step 5: Solve for x
x = 113,761,711,991.44/390,144.26 - Step 6: Final answer
x = 291,588.84
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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.