Finding the Fourth Proportional to 213,661.07, 320,373.29 and 87,389.99
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Solution
The fourth proportional to 213,661.07, 320,373.29 and 87,389.99 is: 131,036.59
Step by Step Solution
- Step 1: Write the proportion equation
213,661.07 : 320,373.29 = 87,389.99 : x - Step 2: Convert to fraction form
213,661.07/320,373.29 = 87,389.99/x - Step 3: Cross multiply
213,661.07x = 320,373.29 × 87,389.99 - Step 4: Simplify right side
213,661.07x = 27,997,417,805.28 - Step 5: Solve for x
x = 27,997,417,805.28/213,661.07 - Step 6: Final answer
x = 131,036.59
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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.