Finding the Fourth Proportional to 285,259.97, 393,685.16 and 157,935.56
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Solution
The fourth proportional to 285,259.97, 393,685.16 and 157,935.56 is: 217,965.70
Step by Step Solution
- Step 1: Write the proportion equation
285,259.97 : 393,685.16 = 157,935.56 : x - Step 2: Convert to fraction form
285,259.97/393,685.16 = 157,935.56/x - Step 3: Cross multiply
285,259.97x = 393,685.16 × 157,935.56 - Step 4: Simplify right side
285,259.97x = 62,176,887,587.34 - Step 5: Solve for x
x = 62,176,887,587.34/285,259.97 - Step 6: Final answer
x = 217,965.70
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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.