Finding the Fourth Proportional to 354,908.70, 489,767.58 and 201,943.58
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Solution
The fourth proportional to 354,908.70, 489,767.58 and 201,943.58 is: 278,678.48
Step by Step Solution
- Step 1: Write the proportion equation
354,908.70 : 489,767.58 = 201,943.58 : x - Step 2: Convert to fraction form
354,908.70/489,767.58 = 201,943.58/x - Step 3: Cross multiply
354,908.70x = 489,767.58 × 201,943.58 - Step 4: Simplify right side
354,908.70x = 98,905,416,024.30 - Step 5: Solve for x
x = 98,905,416,024.30/354,908.70 - Step 6: Final answer
x = 278,678.48
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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.