Finding the Fourth Proportional to 223,026,991.75, 307,759,204.40 and 128,947,174.79
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Solution
The fourth proportional to 223,026,991.75, 307,759,204.40 and 128,947,174.79 is: 177,936,668.62
Step by Step Solution
- Step 1: Write the proportion equation
223,026,991.75 : 307,759,204.40 = 128,947,174.79 : x - Step 2: Convert to fraction form
223,026,991.75/307,759,204.40 = 128,947,174.79/x - Step 3: Cross multiply
223,026,991.75x = 307,759,204.40 × 128,947,174.79 - Step 4: Simplify right side
223,026,991.75x = 39,684,679,922,998,136 - Step 5: Solve for x
x = 39,684,679,922,998,136/223,026,991.75 - Step 6: Final answer
x = 177,936,668.62
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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.