Finding the Fourth Proportional to 212,656.08, 318,990.27 and 79,510.92
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Solution
The fourth proportional to 212,656.08, 318,990.27 and 79,510.92 is: 119,268.68
Step by Step Solution
- Step 1: Write the proportion equation
212,656.08 : 318,990.27 = 79,510.92 : x - Step 2: Convert to fraction form
212,656.08/318,990.27 = 79,510.92/x - Step 3: Cross multiply
212,656.08x = 318,990.27 × 79,510.92 - Step 4: Simplify right side
212,656.08x = 25,363,209,838.75 - Step 5: Solve for x
x = 25,363,209,838.75/212,656.08 - Step 6: Final answer
x = 119,268.68
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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.