Finding the Fourth Proportional to 319,421,132.70, 440,802,491.67 and 172,743,416.70
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Solution
The fourth proportional to 319,421,132.70, 440,802,491.67 and 172,743,416.70 is: 238,386,633.52
Step by Step Solution
- Step 1: Write the proportion equation
319,421,132.70 : 440,802,491.67 = 172,743,416.70 : x - Step 2: Convert to fraction form
319,421,132.70/440,802,491.67 = 172,743,416.70/x - Step 3: Cross multiply
319,421,132.70x = 440,802,491.67 × 172,743,416.70 - Step 4: Simplify right side
319,421,132.70x = 76,145,728,500,949,088 - Step 5: Solve for x
x = 76,145,728,500,949,088/319,421,132.70 - Step 6: Final answer
x = 238,386,633.52
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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.