Finding the Fourth Proportional to 389,112.13, 536,982.94 and 219,346.25
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Solution
The fourth proportional to 389,112.13, 536,982.94 and 219,346.25 is: 302,702.45
Step by Step Solution
- Step 1: Write the proportion equation
389,112.13 : 536,982.94 = 219,346.25 : x - Step 2: Convert to fraction form
389,112.13/536,982.94 = 219,346.25/x - Step 3: Cross multiply
389,112.13x = 536,982.94 × 219,346.25 - Step 4: Simplify right side
389,112.13x = 117,785,193,106.24 - Step 5: Solve for x
x = 117,785,193,106.24/389,112.13 - Step 6: Final answer
x = 302,702.45
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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.