Finding the Fourth Proportional to 217,762.68, 300,516.84 and 122,278.80
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Solution
The fourth proportional to 217,762.68, 300,516.84 and 122,278.80 is: 168,747.18
Step by Step Solution
- Step 1: Write the proportion equation
217,762.68 : 300,516.84 = 122,278.80 : x - Step 2: Convert to fraction form
217,762.68/300,516.84 = 122,278.80/x - Step 3: Cross multiply
217,762.68x = 300,516.84 × 122,278.80 - Step 4: Simplify right side
217,762.68x = 36,746,838,574.99 - Step 5: Solve for x
x = 36,746,838,574.99/217,762.68 - Step 6: Final answer
x = 168,747.18
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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.