Finding the Fourth Proportional to 219,173.67, 328,791.42 and 85,981.68
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Solution
The fourth proportional to 219,173.67, 328,791.42 and 85,981.68 is: 128,984.65
Step by Step Solution
- Step 1: Write the proportion equation
219,173.67 : 328,791.42 = 85,981.68 : x - Step 2: Convert to fraction form
219,173.67/328,791.42 = 85,981.68/x - Step 3: Cross multiply
219,173.67x = 328,791.42 × 85,981.68 - Step 4: Simplify right side
219,173.67x = 28,270,038,661.19 - Step 5: Solve for x
x = 28,270,038,661.19/219,173.67 - Step 6: Final answer
x = 128,984.65
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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.