Finding the Fourth Proportional to 643,817.03, 965,715.71 and 217,652.21
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Solution
The fourth proportional to 643,817.03, 965,715.71 and 217,652.21 is: 326,474.99
Step by Step Solution
- Step 1: Write the proportion equation
643,817.03 : 965,715.71 = 217,652.21 : x - Step 2: Convert to fraction form
643,817.03/965,715.71 = 217,652.21/x - Step 3: Cross multiply
643,817.03x = 965,715.71 × 217,652.21 - Step 4: Simplify right side
643,817.03x = 210,190,158,513.22 - Step 5: Solve for x
x = 210,190,158,513.22/643,817.03 - Step 6: Final answer
x = 326,474.99
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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.