Finding the Fourth Proportional to 319,421,015.79, 440,802,330.12 and 172,743,299.79
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Solution
The fourth proportional to 319,421,015.79, 440,802,330.12 and 172,743,299.79 is: 238,386,472.07
Step by Step Solution
- Step 1: Write the proportion equation
319,421,015.79 : 440,802,330.12 = 172,743,299.79 : x - Step 2: Convert to fraction form
319,421,015.79/440,802,330.12 = 172,743,299.79/x - Step 3: Cross multiply
319,421,015.79x = 440,802,330.12 × 172,743,299.79 - Step 4: Simplify right side
319,421,015.79x = 76,145,649,060,049,696 - Step 5: Solve for x
x = 76,145,649,060,049,696/319,421,015.79 - Step 6: Final answer
x = 238,386,472.07
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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.