Finding the Fourth Proportional to 512,195.10, 768,292.65 and 288,246.30
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Solution
The fourth proportional to 512,195.10, 768,292.65 and 288,246.30 is: 432,369.45
Step by Step Solution
- Step 1: Write the proportion equation
512,195.10 : 768,292.65 = 288,246.30 : x - Step 2: Convert to fraction form
512,195.10/768,292.65 = 288,246.30/x - Step 3: Cross multiply
512,195.10x = 768,292.65 × 288,246.30 - Step 4: Simplify right side
512,195.10x = 221,457,513,679.70 - Step 5: Solve for x
x = 221,457,513,679.70/512,195.10 - Step 6: Final answer
x = 432,369.45
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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.