Finding the Fourth Proportional to 395,640,292.56, 545,975,470.20 and 219,399,847.68
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Solution
The fourth proportional to 395,640,292.56, 545,975,470.20 and 219,399,847.68 is: 302,767,279.40
Step by Step Solution
- Step 1: Write the proportion equation
395,640,292.56 : 545,975,470.20 = 219,399,847.68 : x - Step 2: Convert to fraction form
395,640,292.56/545,975,470.20 = 219,399,847.68/x - Step 3: Cross multiply
395,640,292.56x = 545,975,470.20 × 219,399,847.68 - Step 4: Simplify right side
395,640,292.56x = 119,786,934,998,896,400 - Step 5: Solve for x
x = 119,786,934,998,896,400/395,640,292.56 - Step 6: Final answer
x = 302,767,279.40
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.