Finding the Fourth Proportional to 216,830,736.69, 299,094,965.67 and 128,666,643.09
Calculator
Solution
The fourth proportional to 216,830,736.69, 299,094,965.67 and 128,666,643.09 is: 177,481,964.90
Step by Step Solution
- Step 1: Write the proportion equation
216,830,736.69 : 299,094,965.67 = 128,666,643.09 : x - Step 2: Convert to fraction form
216,830,736.69/299,094,965.67 = 128,666,643.09/x - Step 3: Cross multiply
216,830,736.69x = 299,094,965.67 × 128,666,643.09 - Step 4: Simplify right side
216,830,736.69x = 38,483,545,197,877,696 - Step 5: Solve for x
x = 38,483,545,197,877,696/216,830,736.69 - Step 6: Final answer
x = 177,481,964.90
Related Problems
Find fourth proportional to 108,415,368.35, 149,547,482.84 and 64,333,321.55
Half scale
Find fourth proportional to 433,661,473.38, 598,189,931.34 and 257,333,286.18
Double scale
Find fourth proportional to 216,830,737.69, 299,094,967.05 and 128,666,644.09
Similar ratio
Find fourth proportional to 325,246,105.04, 448,642,448.51 and 192,999,964.64
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.