Finding the Fourth Proportional to 388,191.50, 535,914.54 and 272,260.99
Calculator
Solution
The fourth proportional to 388,191.50, 535,914.54 and 272,260.99 is: 375,867.64
Step by Step Solution
- Step 1: Write the proportion equation
388,191.50 : 535,914.54 = 272,260.99 : x - Step 2: Convert to fraction form
388,191.50/535,914.54 = 272,260.99/x - Step 3: Cross multiply
388,191.50x = 535,914.54 × 272,260.99 - Step 4: Simplify right side
388,191.50x = 145,908,623,215.80 - Step 5: Solve for x
x = 145,908,623,215.80/388,191.50 - Step 6: Final answer
x = 375,867.64
Related Problems
Find fourth proportional to 194,095.75, 267,957.27 and 136,130.50
Half scale
Find fourth proportional to 776,383, 1,071,829.08 and 544,521.98
Double scale
Find fourth proportional to 388,192.50, 535,915.92 and 272,261.99
Similar ratio
Find fourth proportional to 582,287.25, 803,871.81 and 408,391.49
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.