Finding the Fourth Proportional to 438,769.20, 657,716.40 and 201,698.40
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Solution
The fourth proportional to 438,769.20, 657,716.40 and 201,698.40 is: 302,346.53
Step by Step Solution
- Step 1: Write the proportion equation
438,769.20 : 657,716.40 = 201,698.40 : x - Step 2: Convert to fraction form
438,769.20/657,716.40 = 201,698.40/x - Step 3: Cross multiply
438,769.20x = 657,716.40 × 201,698.40 - Step 4: Simplify right side
438,769.20x = 132,660,345,533.76 - Step 5: Solve for x
x = 132,660,345,533.76/438,769.20 - Step 6: Final answer
x = 302,346.53
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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.