Finding the Fourth Proportional to 217,177.74, 299,717.28 and 121,715.19
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Solution
The fourth proportional to 217,177.74, 299,717.28 and 121,715.19 is: 167,973.69
Step by Step Solution
- Step 1: Write the proportion equation
217,177.74 : 299,717.28 = 121,715.19 : x - Step 2: Convert to fraction form
217,177.74/299,717.28 = 121,715.19/x - Step 3: Cross multiply
217,177.74x = 299,717.28 × 121,715.19 - Step 4: Simplify right side
217,177.74x = 36,480,145,681.48 - Step 5: Solve for x
x = 36,480,145,681.48/217,177.74 - Step 6: Final answer
x = 167,973.69
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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.