Finding the Fourth Proportional to 390,149.26, 538,405.98 and 211,301.26
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Solution
The fourth proportional to 390,149.26, 538,405.98 and 211,301.26 is: 291,595.74
Step by Step Solution
- Step 1: Write the proportion equation
390,149.26 : 538,405.98 = 211,301.26 : x - Step 2: Convert to fraction form
390,149.26/538,405.98 = 211,301.26/x - Step 3: Cross multiply
390,149.26x = 538,405.98 × 211,301.26 - Step 4: Simplify right side
390,149.26x = 113,765,861,965.54 - Step 5: Solve for x
x = 113,765,861,965.54/390,149.26 - Step 6: Final answer
x = 291,595.74
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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.