Finding the Fourth Proportional to 461,415.20, 692,122.80 and 212,583.20
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Solution
The fourth proportional to 461,415.20, 692,122.80 and 212,583.20 is: 318,874.80
Step by Step Solution
- Step 1: Write the proportion equation
461,415.20 : 692,122.80 = 212,583.20 : x - Step 2: Convert to fraction form
461,415.20/692,122.80 = 212,583.20/x - Step 3: Cross multiply
461,415.20x = 692,122.80 × 212,583.20 - Step 4: Simplify right side
461,415.20x = 147,133,679,616.96 - Step 5: Solve for x
x = 147,133,679,616.96/461,415.20 - Step 6: Final answer
x = 318,874.80
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1.5x scale
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.