Finding the Fourth Proportional to 389,431.13, 537,415.02 and 210,583.13
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Solution
The fourth proportional to 389,431.13, 537,415.02 and 210,583.13 is: 290,604.75
Step by Step Solution
- Step 1: Write the proportion equation
389,431.13 : 537,415.02 = 210,583.13 : x - Step 2: Convert to fraction form
389,431.13/537,415.02 = 210,583.13/x - Step 3: Cross multiply
389,431.13x = 537,415.02 × 210,583.13 - Step 4: Simplify right side
389,431.13x = 113,170,534,333.54 - Step 5: Solve for x
x = 113,170,534,333.54/389,431.13 - Step 6: Final answer
x = 290,604.75
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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.