Finding the Fourth Proportional to 386,542.67, 579,868.70 and 120,330.09
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Solution
The fourth proportional to 386,542.67, 579,868.70 and 120,330.09 is: 180,512.16
Step by Step Solution
- Step 1: Write the proportion equation
386,542.67 : 579,868.70 = 120,330.09 : x - Step 2: Convert to fraction form
386,542.67/579,868.70 = 120,330.09/x - Step 3: Cross multiply
386,542.67x = 579,868.70 × 120,330.09 - Step 4: Simplify right side
386,542.67x = 69,775,652,257.53 - Step 5: Solve for x
x = 69,775,652,257.53/386,542.67 - Step 6: Final answer
x = 180,512.16
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.