Finding the Fourth Proportional to 307,515.20, 461,337.60 and 129,930.80
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Solution
The fourth proportional to 307,515.20, 461,337.60 and 129,930.80 is: 194,923.58
Step by Step Solution
- Step 1: Write the proportion equation
307,515.20 : 461,337.60 = 129,930.80 : x - Step 2: Convert to fraction form
307,515.20/461,337.60 = 129,930.80/x - Step 3: Cross multiply
307,515.20x = 461,337.60 × 129,930.80 - Step 4: Simplify right side
307,515.20x = 59,941,963,438.08 - Step 5: Solve for x
x = 59,941,963,438.08/307,515.20 - Step 6: Final answer
x = 194,923.58
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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.