Finding the Fourth Proportional to 287,776.04, 397,131.18 and 160,449.08
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Solution
The fourth proportional to 287,776.04, 397,131.18 and 160,449.08 is: 221,419.87
Step by Step Solution
- Step 1: Write the proportion equation
287,776.04 : 397,131.18 = 160,449.08 : x - Step 2: Convert to fraction form
287,776.04/397,131.18 = 160,449.08/x - Step 3: Cross multiply
287,776.04x = 397,131.18 × 160,449.08 - Step 4: Simplify right side
287,776.04x = 63,719,332,470.31 - Step 5: Solve for x
x = 63,719,332,470.31/287,776.04 - Step 6: Final answer
x = 221,419.87
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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.