Finding the Fourth Proportional to 212,981.86, 319,352.91 and 70,750.99
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Solution
The fourth proportional to 212,981.86, 319,352.91 and 70,750.99 is: 106,086.66
Step by Step Solution
- Step 1: Write the proportion equation
212,981.86 : 319,352.91 = 70,750.99 : x - Step 2: Convert to fraction form
212,981.86/319,352.91 = 70,750.99/x - Step 3: Cross multiply
212,981.86x = 319,352.91 × 70,750.99 - Step 4: Simplify right side
212,981.86x = 22,594,534,541.88 - Step 5: Solve for x
x = 22,594,534,541.88/212,981.86 - Step 6: Final answer
x = 106,086.66
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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.