Finding the Fourth Proportional to 389,837.40, 537,980.09 and 228,695.19
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Solution
The fourth proportional to 389,837.40, 537,980.09 and 228,695.19 is: 315,601.99
Step by Step Solution
- Step 1: Write the proportion equation
389,837.40 : 537,980.09 = 228,695.19 : x - Step 2: Convert to fraction form
389,837.40/537,980.09 = 228,695.19/x - Step 3: Cross multiply
389,837.40x = 537,980.09 × 228,695.19 - Step 4: Simplify right side
389,837.40x = 123,033,458,898.77 - Step 5: Solve for x
x = 123,033,458,898.77/389,837.40 - Step 6: Final answer
x = 315,601.99
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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.