Finding the Fourth Proportional to 280,628.26, 387,272.70 and 153,312.08
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Solution
The fourth proportional to 280,628.26, 387,272.70 and 153,312.08 is: 211,573.79
Step by Step Solution
- Step 1: Write the proportion equation
280,628.26 : 387,272.70 = 153,312.08 : x - Step 2: Convert to fraction form
280,628.26/387,272.70 = 153,312.08/x - Step 3: Cross multiply
280,628.26x = 387,272.70 × 153,312.08 - Step 4: Simplify right side
280,628.26x = 59,373,583,164.22 - Step 5: Solve for x
x = 59,373,583,164.22/280,628.26 - Step 6: Final answer
x = 211,573.79
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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.