Finding the Fourth Proportional to 255,603.99, 383,406.89 and 78,110.25
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Solution
The fourth proportional to 255,603.99, 383,406.89 and 78,110.25 is: 117,165.65
Step by Step Solution
- Step 1: Write the proportion equation
255,603.99 : 383,406.89 = 78,110.25 : x - Step 2: Convert to fraction form
255,603.99/383,406.89 = 78,110.25/x - Step 3: Cross multiply
255,603.99x = 383,406.89 × 78,110.25 - Step 4: Simplify right side
255,603.99x = 29,948,007,639.07 - Step 5: Solve for x
x = 29,948,007,639.07/255,603.99 - Step 6: Final answer
x = 117,165.65
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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.