Finding the Fourth Proportional to 212,842.80, 293,479.20 and 159,037.20
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Solution
The fourth proportional to 212,842.80, 293,479.20 and 159,037.20 is: 219,289.12
Step by Step Solution
- Step 1: Write the proportion equation
212,842.80 : 293,479.20 = 159,037.20 : x - Step 2: Convert to fraction form
212,842.80/293,479.20 = 159,037.20/x - Step 3: Cross multiply
212,842.80x = 293,479.20 × 159,037.20 - Step 4: Simplify right side
212,842.80x = 46,674,110,226.24 - Step 5: Solve for x
x = 46,674,110,226.24/212,842.80 - Step 6: Final answer
x = 219,289.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.