Finding the Fourth Proportional to 210,507,831.99, 315,783,405.50 and 79,460,490.78
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Solution
The fourth proportional to 210,507,831.99, 315,783,405.50 and 79,460,490.78 is: 119,198,911.24
Step by Step Solution
- Step 1: Write the proportion equation
210,507,831.99 : 315,783,405.50 = 79,460,490.78 : x - Step 2: Convert to fraction form
210,507,831.99/315,783,405.50 = 79,460,490.78/x - Step 3: Cross multiply
210,507,831.99x = 315,783,405.50 × 79,460,490.78 - Step 4: Simplify right side
210,507,831.99x = 25,092,304,380,812,448 - Step 5: Solve for x
x = 25,092,304,380,812,448/210,507,831.99 - Step 6: Final answer
x = 119,198,911.24
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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.