Finding the Fourth Proportional to 354,947.46, 490,345.68 and 307,117.80
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Solution
The fourth proportional to 354,947.46, 490,345.68 and 307,117.80 is: 424,270.92
Step by Step Solution
- Step 1: Write the proportion equation
354,947.46 : 490,345.68 = 307,117.80 : x - Step 2: Convert to fraction form
354,947.46/490,345.68 = 307,117.80/x - Step 3: Cross multiply
354,947.46x = 490,345.68 × 307,117.80 - Step 4: Simplify right side
354,947.46x = 150,593,886,481.10 - Step 5: Solve for x
x = 150,593,886,481.10/354,947.46 - Step 6: Final answer
x = 424,270.92
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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.