Finding the Fourth Proportional to 256,854.65, 354,459.75 and 142,138.09
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Solution
The fourth proportional to 256,854.65, 354,459.75 and 142,138.09 is: 196,150.75
Step by Step Solution
- Step 1: Write the proportion equation
256,854.65 : 354,459.75 = 142,138.09 : x - Step 2: Convert to fraction form
256,854.65/354,459.75 = 142,138.09/x - Step 3: Cross multiply
256,854.65x = 354,459.75 × 142,138.09 - Step 4: Simplify right side
256,854.65x = 50,382,231,756.93 - Step 5: Solve for x
x = 50,382,231,756.93/256,854.65 - Step 6: Final answer
x = 196,150.75
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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.