Finding the Fourth Proportional to 211,078,472,971.88, 291,320,133,496.02 and 128,727,008,860.36
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Solution
The fourth proportional to 211,078,472,971.88, 291,320,133,496.02 and 128,727,008,860.36 is: 177,662,690,457.02
Step by Step Solution
- Step 1: Write the proportion equation
211,078,472,971.88 : 291,320,133,496.02 = 128,727,008,860.36 : x - Step 2: Convert to fraction form
211,078,472,971.88/291,320,133,496.02 = 128,727,008,860.36/x - Step 3: Cross multiply
211,078,472,971.88x = 291,320,133,496.02 × 128,727,008,860.36 - Step 4: Simplify right side
211,078,472,971.88x = 37,500,769,405,743,426,174,976 - Step 5: Solve for x
x = 37,500,769,405,743,426,174,976/211,078,472,971.88 - Step 6: Final answer
x = 177,662,690,457.02
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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.