Finding the Fourth Proportional to 343,423.80, 515,135.70 and 143,677.80
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Solution
The fourth proportional to 343,423.80, 515,135.70 and 143,677.80 is: 215,516.70
Step by Step Solution
- Step 1: Write the proportion equation
343,423.80 : 515,135.70 = 143,677.80 : x - Step 2: Convert to fraction form
343,423.80/515,135.70 = 143,677.80/x - Step 3: Cross multiply
343,423.80x = 515,135.70 × 143,677.80 - Step 4: Simplify right side
343,423.80x = 74,013,564,077.46 - Step 5: Solve for x
x = 74,013,564,077.46/343,423.80 - Step 6: Final answer
x = 215,516.70
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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.