Finding the Fourth Proportional to 445,355,447.40, 668,201,132.70 and 215,527,991.40
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Solution
The fourth proportional to 445,355,447.40, 668,201,132.70 and 215,527,991.40 is: 323,373,271.45
Step by Step Solution
- Step 1: Write the proportion equation
445,355,447.40 : 668,201,132.70 = 215,527,991.40 : x - Step 2: Convert to fraction form
445,355,447.40/668,201,132.70 = 215,527,991.40/x - Step 3: Cross multiply
445,355,447.40x = 668,201,132.70 × 215,527,991.40 - Step 4: Simplify right side
445,355,447.40x = 144,016,047,982,035,872 - Step 5: Solve for x
x = 144,016,047,982,035,872/445,355,447.40 - Step 6: Final answer
x = 323,373,271.45
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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.