Finding the Fourth Proportional to 280,563.10, 387,177.08 and 153,239.00
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Solution
The fourth proportional to 280,563.10, 387,177.08 and 153,239.00 is: 211,469.81
Step by Step Solution
- Step 1: Write the proportion equation
280,563.10 : 387,177.08 = 153,239.00 : x - Step 2: Convert to fraction form
280,563.10/387,177.08 = 153,239.00/x - Step 3: Cross multiply
280,563.10x = 387,177.08 × 153,239.00 - Step 4: Simplify right side
280,563.10x = 59,330,625,860.04 - Step 5: Solve for x
x = 59,330,625,860.04/280,563.10 - Step 6: Final answer
x = 211,469.81
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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.