Finding the Fourth Proportional to 285,283.68, 393,713.64 and 157,971.12
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Solution
The fourth proportional to 285,283.68, 393,713.64 and 157,971.12 is: 218,012.42
Step by Step Solution
- Step 1: Write the proportion equation
285,283.68 : 393,713.64 = 157,971.12 : x - Step 2: Convert to fraction form
285,283.68/393,713.64 = 157,971.12/x - Step 3: Cross multiply
285,283.68x = 393,713.64 × 157,971.12 - Step 4: Simplify right side
285,283.68x = 62,195,384,670.08 - Step 5: Solve for x
x = 62,195,384,670.08/285,283.68 - Step 6: Final answer
x = 218,012.42
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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.