Finding the Fourth Proportional to 387,735.84, 581,603.94 and 121,517.07
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Solution
The fourth proportional to 387,735.84, 581,603.94 and 121,517.07 is: 182,275.66
Step by Step Solution
- Step 1: Write the proportion equation
387,735.84 : 581,603.94 = 121,517.07 : x - Step 2: Convert to fraction form
387,735.84/581,603.94 = 121,517.07/x - Step 3: Cross multiply
387,735.84x = 581,603.94 × 121,517.07 - Step 4: Simplify right side
387,735.84x = 70,674,806,689.26 - Step 5: Solve for x
x = 70,674,806,689.26/387,735.84 - Step 6: Final answer
x = 182,275.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.