Finding the Fourth Proportional to 256,966.42, 354,623.34 and 143,789.98
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Solution
The fourth proportional to 256,966.42, 354,623.34 and 143,789.98 is: 198,435.59
Step by Step Solution
- Step 1: Write the proportion equation
256,966.42 : 354,623.34 = 143,789.98 : x - Step 2: Convert to fraction form
256,966.42/354,623.34 = 143,789.98/x - Step 3: Cross multiply
256,966.42x = 354,623.34 × 143,789.98 - Step 4: Simplify right side
256,966.42x = 50,991,282,966.13 - Step 5: Solve for x
x = 50,991,282,966.13/256,966.42 - Step 6: Final answer
x = 198,435.59
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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.