Finding the Fourth Proportional to 212,624,800.80, 318,937,201.20 and 208,593,722.40
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Solution
The fourth proportional to 212,624,800.80, 318,937,201.20 and 208,593,722.40 is: 312,890,583.60
Step by Step Solution
- Step 1: Write the proportion equation
212,624,800.80 : 318,937,201.20 = 208,593,722.40 : x - Step 2: Convert to fraction form
212,624,800.80/318,937,201.20 = 208,593,722.40/x - Step 3: Cross multiply
212,624,800.80x = 318,937,201.20 × 208,593,722.40 - Step 4: Simplify right side
212,624,800.80x = 66,528,298,010,145,744 - Step 5: Solve for x
x = 66,528,298,010,145,744/212,624,800.80 - Step 6: Final answer
x = 312,890,583.60
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1.5x scale
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.