Finding the Fourth Proportional to 230,679.30, 318,336.99 and 128,698.69
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Solution
The fourth proportional to 230,679.30, 318,336.99 and 128,698.69 is: 177,603.95
Step by Step Solution
- Step 1: Write the proportion equation
230,679.30 : 318,336.99 = 128,698.69 : x - Step 2: Convert to fraction form
230,679.30/318,336.99 = 128,698.69/x - Step 3: Cross multiply
230,679.30x = 318,336.99 × 128,698.69 - Step 4: Simplify right side
230,679.30x = 40,969,554,709.13 - Step 5: Solve for x
x = 40,969,554,709.13/230,679.30 - Step 6: Final answer
x = 177,603.95
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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.