Finding the Fourth Proportional to 213,625.36, 320,434.56 and 87,237.84
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Solution
The fourth proportional to 213,625.36, 320,434.56 and 87,237.84 is: 130,855.34
Step by Step Solution
- Step 1: Write the proportion equation
213,625.36 : 320,434.56 = 87,237.84 : x - Step 2: Convert to fraction form
213,625.36/320,434.56 = 87,237.84/x - Step 3: Cross multiply
213,625.36x = 320,434.56 × 87,237.84 - Step 4: Simplify right side
213,625.36x = 27,954,018,875.75 - Step 5: Solve for x
x = 27,954,018,875.75/213,625.36 - Step 6: Final answer
x = 130,855.34
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.