Finding the Fourth Proportional to 388,307,301.48, 582,463,129.50 and 129,521,811.42
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Solution
The fourth proportional to 388,307,301.48, 582,463,129.50 and 129,521,811.42 is: 194,283,443.37
Step by Step Solution
- Step 1: Write the proportion equation
388,307,301.48 : 582,463,129.50 = 129,521,811.42 : x - Step 2: Convert to fraction form
388,307,301.48/582,463,129.50 = 129,521,811.42/x - Step 3: Cross multiply
388,307,301.48x = 582,463,129.50 × 129,521,811.42 - Step 4: Simplify right side
388,307,301.48x = 75,441,679,618,202,032 - Step 5: Solve for x
x = 75,441,679,618,202,032/388,307,301.48 - Step 6: Final answer
x = 194,283,443.37
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.