Finding the Fourth Proportional to 217,136.08, 325,638.51 and 128,365.75
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Solution
The fourth proportional to 217,136.08, 325,638.51 and 128,365.75 is: 192,509.84
Step by Step Solution
- Step 1: Write the proportion equation
217,136.08 : 325,638.51 = 128,365.75 : x - Step 2: Convert to fraction form
217,136.08/325,638.51 = 128,365.75/x - Step 3: Cross multiply
217,136.08x = 325,638.51 × 128,365.75 - Step 4: Simplify right side
217,136.08x = 41,800,831,565.03 - Step 5: Solve for x
x = 41,800,831,565.03/217,136.08 - Step 6: Final answer
x = 192,509.84
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.