Finding the Fourth Proportional to 389,684.13, 537,706.44 and 236,642.73
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Solution
The fourth proportional to 389,684.13, 537,706.44 and 236,642.73 is: 326,531.95
Step by Step Solution
- Step 1: Write the proportion equation
389,684.13 : 537,706.44 = 236,642.73 : x - Step 2: Convert to fraction form
389,684.13/537,706.44 = 236,642.73/x - Step 3: Cross multiply
389,684.13x = 537,706.44 × 236,642.73 - Step 4: Simplify right side
389,684.13x = 127,244,319,900.18 - Step 5: Solve for x
x = 127,244,319,900.18/389,684.13 - Step 6: Final answer
x = 326,531.95
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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.