Finding the Fourth Proportional to 393,726.75, 543,342.93 and 214,878.75
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Solution
The fourth proportional to 393,726.75, 543,342.93 and 214,878.75 is: 296,532.68
Step by Step Solution
- Step 1: Write the proportion equation
393,726.75 : 543,342.93 = 214,878.75 : x - Step 2: Convert to fraction form
393,726.75/543,342.93 = 214,878.75/x - Step 3: Cross multiply
393,726.75x = 543,342.93 × 214,878.75 - Step 4: Simplify right side
393,726.75x = 116,752,849,619.74 - Step 5: Solve for x
x = 116,752,849,619.74/393,726.75 - Step 6: Final answer
x = 296,532.68
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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.