Finding the Fourth Proportional to 399,450,716.81, 551,259,013.35 and 223,238,706.98
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Solution
The fourth proportional to 399,450,716.81, 551,259,013.35 and 223,238,706.98 is: 308,078,929.82
Step by Step Solution
- Step 1: Write the proportion equation
399,450,716.81 : 551,259,013.35 = 223,238,706.98 : x - Step 2: Convert to fraction form
399,450,716.81/551,259,013.35 = 223,238,706.98/x - Step 3: Cross multiply
399,450,716.81x = 551,259,013.35 × 223,238,706.98 - Step 4: Simplify right side
399,450,716.81x = 123,062,349,351,324,560 - Step 5: Solve for x
x = 123,062,349,351,324,560/399,450,716.81 - Step 6: Final answer
x = 308,078,929.82
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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.