Finding the Fourth Proportional to 256,136,762.49, 353,469,528 and 138,661,812.36
Calculator
Solution
The fourth proportional to 256,136,762.49, 353,469,528 and 138,661,812.36 is: 191,353,731.85
Step by Step Solution
- Step 1: Write the proportion equation
256,136,762.49 : 353,469,528 = 138,661,812.36 : x - Step 2: Convert to fraction form
256,136,762.49/353,469,528 = 138,661,812.36/x - Step 3: Cross multiply
256,136,762.49x = 353,469,528 × 138,661,812.36 - Step 4: Simplify right side
256,136,762.49x = 49,012,725,366,513,768 - Step 5: Solve for x
x = 49,012,725,366,513,768/256,136,762.49 - Step 6: Final answer
x = 191,353,731.85
Related Problems
Find fourth proportional to 128,068,381.25, 176,734,764 and 69,330,906.18
Half scale
Find fourth proportional to 512,273,524.98, 706,939,056 and 277,323,624.72
Double scale
Find fourth proportional to 256,136,763.49, 353,469,529.38 and 138,661,813.36
Similar ratio
Find fourth proportional to 384,205,143.74, 530,204,292 and 207,992,718.54
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.