Finding the Fourth Proportional to 385,370,360.52, 531,719,948.51 and 218,106,621.68
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Solution
The fourth proportional to 385,370,360.52, 531,719,948.51 and 218,106,621.68 is: 300,935,550.66
Step by Step Solution
- Step 1: Write the proportion equation
385,370,360.52 : 531,719,948.51 = 218,106,621.68 : x - Step 2: Convert to fraction form
385,370,360.52/531,719,948.51 = 218,106,621.68/x - Step 3: Cross multiply
385,370,360.52x = 531,719,948.51 × 218,106,621.68 - Step 4: Simplify right side
385,370,360.52x = 115,971,641,649,379,648 - Step 5: Solve for x
x = 115,971,641,649,379,648/385,370,360.52 - Step 6: Final answer
x = 300,935,550.66
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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.