Finding the Fourth Proportional to 285,313.98, 393,728.48 and 157,986.84
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Solution
The fourth proportional to 285,313.98, 393,728.48 and 157,986.84 is: 218,019.17
Step by Step Solution
- Step 1: Write the proportion equation
285,313.98 : 393,728.48 = 157,986.84 : x - Step 2: Convert to fraction form
285,313.98/393,728.48 = 157,986.84/x - Step 3: Cross multiply
285,313.98x = 393,728.48 × 157,986.84 - Step 4: Simplify right side
285,313.98x = 62,203,918,373.20 - Step 5: Solve for x
x = 62,203,918,373.20/285,313.98 - Step 6: Final answer
x = 218,019.17
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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.