Finding the Fourth Proportional to 219,841.20, 329,518.80 and 86,677.20
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Solution
The fourth proportional to 219,841.20, 329,518.80 and 86,677.20 is: 129,919.99
Step by Step Solution
- Step 1: Write the proportion equation
219,841.20 : 329,518.80 = 86,677.20 : x - Step 2: Convert to fraction form
219,841.20/329,518.80 = 86,677.20/x - Step 3: Cross multiply
219,841.20x = 329,518.80 × 86,677.20 - Step 4: Simplify right side
219,841.20x = 28,561,766,931.36 - Step 5: Solve for x
x = 28,561,766,931.36/219,841.20 - Step 6: Final answer
x = 129,919.99
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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.