Finding the Fourth Proportional to 219,045.05, 302,176.74 and 128,344.69
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Solution
The fourth proportional to 219,045.05, 302,176.74 and 128,344.69 is: 177,053.90
Step by Step Solution
- Step 1: Write the proportion equation
219,045.05 : 302,176.74 = 128,344.69 : x - Step 2: Convert to fraction form
219,045.05/302,176.74 = 128,344.69/x - Step 3: Cross multiply
219,045.05x = 302,176.74 × 128,344.69 - Step 4: Simplify right side
219,045.05x = 38,782,780,020.51 - Step 5: Solve for x
x = 38,782,780,020.51/219,045.05 - Step 6: Final answer
x = 177,053.90
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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.