Finding the Fourth Proportional to 385,422.84, 578,146.95 and 132,700.68
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Solution
The fourth proportional to 385,422.84, 578,146.95 and 132,700.68 is: 199,055.39
Step by Step Solution
- Step 1: Write the proportion equation
385,422.84 : 578,146.95 = 132,700.68 : x - Step 2: Convert to fraction form
385,422.84/578,146.95 = 132,700.68/x - Step 3: Cross multiply
385,422.84x = 578,146.95 × 132,700.68 - Step 4: Simplify right side
385,422.84x = 76,720,493,404.93 - Step 5: Solve for x
x = 76,720,493,404.93/385,422.84 - Step 6: Final answer
x = 199,055.39
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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.