Finding the Fourth Proportional to 327,953.65, 491,972.01 and 128,248.09
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Solution
The fourth proportional to 327,953.65, 491,972.01 and 128,248.09 is: 192,388.38
Step by Step Solution
- Step 1: Write the proportion equation
327,953.65 : 491,972.01 = 128,248.09 : x - Step 2: Convert to fraction form
327,953.65/491,972.01 = 128,248.09/x - Step 3: Cross multiply
327,953.65x = 491,972.01 × 128,248.09 - Step 4: Simplify right side
327,953.65x = 63,094,470,615.96 - Step 5: Solve for x
x = 63,094,470,615.96/327,953.65 - Step 6: Final answer
x = 192,388.38
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.