Finding the Fourth Proportional to 212,210.79, 318,288.99 and 70,020.87
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Solution
The fourth proportional to 212,210.79, 318,288.99 and 70,020.87 is: 105,022.33
Step by Step Solution
- Step 1: Write the proportion equation
212,210.79 : 318,288.99 = 70,020.87 : x - Step 2: Convert to fraction form
212,210.79/318,288.99 = 70,020.87/x - Step 3: Cross multiply
212,210.79x = 318,288.99 × 70,020.87 - Step 4: Simplify right side
212,210.79x = 22,286,871,991.22 - Step 5: Solve for x
x = 22,286,871,991.22/212,210.79 - Step 6: Final answer
x = 105,022.33
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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.