Finding the Fourth Proportional to 235,859.96, 325,490.64 and 128,432.09
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Solution
The fourth proportional to 235,859.96, 325,490.64 and 128,432.09 is: 177,238.40
Step by Step Solution
- Step 1: Write the proportion equation
235,859.96 : 325,490.64 = 128,432.09 : x - Step 2: Convert to fraction form
235,859.96/325,490.64 = 128,432.09/x - Step 3: Cross multiply
235,859.96x = 325,490.64 × 128,432.09 - Step 4: Simplify right side
235,859.96x = 41,803,443,502.74 - Step 5: Solve for x
x = 41,803,443,502.74/235,859.96 - Step 6: Final answer
x = 177,238.40
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1.5x scale
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.