Finding the Fourth Proportional to 212,980.86, 319,351.41 and 70,749.99
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Solution
The fourth proportional to 212,980.86, 319,351.41 and 70,749.99 is: 106,085.16
Step by Step Solution
- Step 1: Write the proportion equation
212,980.86 : 319,351.41 = 70,749.99 : x - Step 2: Convert to fraction form
212,980.86/319,351.41 = 70,749.99/x - Step 3: Cross multiply
212,980.86x = 319,351.41 × 70,749.99 - Step 4: Simplify right side
212,980.86x = 22,594,109,063.99 - Step 5: Solve for x
x = 22,594,109,063.99/212,980.86 - Step 6: Final answer
x = 106,085.16
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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.