Finding the Fourth Proportional to 217,432.80, 326,206.80 and 77,176.80
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Solution
The fourth proportional to 217,432.80, 326,206.80 and 77,176.80 is: 115,785.64
Step by Step Solution
- Step 1: Write the proportion equation
217,432.80 : 326,206.80 = 77,176.80 : x - Step 2: Convert to fraction form
217,432.80/326,206.80 = 77,176.80/x - Step 3: Cross multiply
217,432.80x = 326,206.80 × 77,176.80 - Step 4: Simplify right side
217,432.80x = 25,175,596,962.24 - Step 5: Solve for x
x = 25,175,596,962.24/217,432.80 - Step 6: Final answer
x = 115,785.64
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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.