Finding the Fourth Proportional to 245,689.19, 339,049.95 and 138,261.02
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Solution
The fourth proportional to 245,689.19, 339,049.95 and 138,261.02 is: 190,799.57
Step by Step Solution
- Step 1: Write the proportion equation
245,689.19 : 339,049.95 = 138,261.02 : x - Step 2: Convert to fraction form
245,689.19/339,049.95 = 138,261.02/x - Step 3: Cross multiply
245,689.19x = 339,049.95 × 138,261.02 - Step 4: Simplify right side
245,689.19x = 46,877,390,222.70 - Step 5: Solve for x
x = 46,877,390,222.70/245,689.19 - Step 6: Final answer
x = 190,799.57
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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.