Finding the Fourth Proportional to 438,143.01, 657,295.61 and 138,698.97
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Solution
The fourth proportional to 438,143.01, 657,295.61 and 138,698.97 is: 208,074.12
Step by Step Solution
- Step 1: Write the proportion equation
438,143.01 : 657,295.61 = 138,698.97 : x - Step 2: Convert to fraction form
438,143.01/657,295.61 = 138,698.97/x - Step 3: Cross multiply
438,143.01x = 657,295.61 × 138,698.97 - Step 4: Simplify right side
438,143.01x = 91,166,223,399.03 - Step 5: Solve for x
x = 91,166,223,399.03/438,143.01 - Step 6: Final answer
x = 208,074.12
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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.