Finding the Fourth Proportional to 211,299.84, 316,949.76 and 128,018.88
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Solution
The fourth proportional to 211,299.84, 316,949.76 and 128,018.88 is: 192,028.32
Step by Step Solution
- Step 1: Write the proportion equation
211,299.84 : 316,949.76 = 128,018.88 : x - Step 2: Convert to fraction form
211,299.84/316,949.76 = 128,018.88/x - Step 3: Cross multiply
211,299.84x = 316,949.76 × 128,018.88 - Step 4: Simplify right side
211,299.84x = 40,575,553,291.47 - Step 5: Solve for x
x = 40,575,553,291.47/211,299.84 - Step 6: Final answer
x = 192,028.32
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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.