Finding the Fourth Proportional to 219,837.80, 329,612.70 and 86,637.80
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Solution
The fourth proportional to 219,837.80, 329,612.70 and 86,637.80 is: 129,899.95
Step by Step Solution
- Step 1: Write the proportion equation
219,837.80 : 329,612.70 = 86,637.80 : x - Step 2: Convert to fraction form
219,837.80/329,612.70 = 86,637.80/x - Step 3: Cross multiply
219,837.80x = 329,612.70 × 86,637.80 - Step 4: Simplify right side
219,837.80x = 28,556,919,180.06 - Step 5: Solve for x
x = 28,556,919,180.06/219,837.80 - Step 6: Final answer
x = 129,899.95
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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.