Finding the Fourth Proportional to 228,564.81, 315,420.35 and 133,137.09
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Solution
The fourth proportional to 228,564.81, 315,420.35 and 133,137.09 is: 183,729.71
Step by Step Solution
- Step 1: Write the proportion equation
228,564.81 : 315,420.35 = 133,137.09 : x - Step 2: Convert to fraction form
228,564.81/315,420.35 = 133,137.09/x - Step 3: Cross multiply
228,564.81x = 315,420.35 × 133,137.09 - Step 4: Simplify right side
228,564.81x = 41,994,146,860.10 - Step 5: Solve for x
x = 41,994,146,860.10/228,564.81 - Step 6: Final answer
x = 183,729.71
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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.