Finding the Fourth Proportional to 220,128,346.40, 330,192,519.60 and 124,576,858.40
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Solution
The fourth proportional to 220,128,346.40, 330,192,519.60 and 124,576,858.40 is: 186,865,287.60
Step by Step Solution
- Step 1: Write the proportion equation
220,128,346.40 : 330,192,519.60 = 124,576,858.40 : x - Step 2: Convert to fraction form
220,128,346.40/330,192,519.60 = 124,576,858.40/x - Step 3: Cross multiply
220,128,346.40x = 330,192,519.60 × 124,576,858.40 - Step 4: Simplify right side
220,128,346.40x = 41,134,346,758,948,432 - Step 5: Solve for x
x = 41,134,346,758,948,432/220,128,346.40 - Step 6: Final answer
x = 186,865,287.60
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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.