Finding the Fourth Proportional to 220,681.68, 304,571.74 and 128,831.09
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Solution
The fourth proportional to 220,681.68, 304,571.74 and 128,831.09 is: 177,805.01
Step by Step Solution
- Step 1: Write the proportion equation
220,681.68 : 304,571.74 = 128,831.09 : x - Step 2: Convert to fraction form
220,681.68/304,571.74 = 128,831.09/x - Step 3: Cross multiply
220,681.68x = 304,571.74 × 128,831.09 - Step 4: Simplify right side
220,681.68x = 39,238,308,786.16 - Step 5: Solve for x
x = 39,238,308,786.16/220,681.68 - Step 6: Final answer
x = 177,805.01
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.