Finding the Fourth Proportional to 385,365,245.03, 531,804,564.79 and 209,153,243.12
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Solution
The fourth proportional to 385,365,245.03, 531,804,564.79 and 209,153,243.12 is: 288,631,761.33
Step by Step Solution
- Step 1: Write the proportion equation
385,365,245.03 : 531,804,564.79 = 209,153,243.12 : x - Step 2: Convert to fraction form
385,365,245.03/531,804,564.79 = 209,153,243.12/x - Step 3: Cross multiply
385,365,245.03x = 531,804,564.79 × 209,153,243.12 - Step 4: Simplify right side
385,365,245.03x = 111,228,649,428,666,768 - Step 5: Solve for x
x = 111,228,649,428,666,768/385,365,245.03 - Step 6: Final answer
x = 288,631,761.33
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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.