Finding the Fourth Proportional to 512,864.10, 769,438.35 and 213,485.70
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Solution
The fourth proportional to 512,864.10, 769,438.35 and 213,485.70 is: 320,287.74
Step by Step Solution
- Step 1: Write the proportion equation
512,864.10 : 769,438.35 = 213,485.70 : x - Step 2: Convert to fraction form
512,864.10/769,438.35 = 213,485.70/x - Step 3: Cross multiply
512,864.10x = 769,438.35 × 213,485.70 - Step 4: Simplify right side
512,864.10x = 164,264,084,756.60 - Step 5: Solve for x
x = 164,264,084,756.60/512,864.10 - Step 6: Final answer
x = 320,287.74
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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.