Finding the Fourth Proportional to 280,563.21, 387,177.21 and 153,239.09
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Solution
The fourth proportional to 280,563.21, 387,177.21 and 153,239.09 is: 211,469.93
Step by Step Solution
- Step 1: Write the proportion equation
280,563.21 : 387,177.21 = 153,239.09 : x - Step 2: Convert to fraction form
280,563.21/387,177.21 = 153,239.09/x - Step 3: Cross multiply
280,563.21x = 387,177.21 × 153,239.09 - Step 4: Simplify right side
280,563.21x = 59,330,681,393.25 - Step 5: Solve for x
x = 59,330,681,393.25/280,563.21 - Step 6: Final answer
x = 211,469.93
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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.