Finding the Fourth Proportional to 212,947,471.80, 293,868,396.78 and 115,162,327.80
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Solution
The fourth proportional to 212,947,471.80, 293,868,396.78 and 115,162,327.80 is: 158,924,491.35
Step by Step Solution
- Step 1: Write the proportion equation
212,947,471.80 : 293,868,396.78 = 115,162,327.80 : x - Step 2: Convert to fraction form
212,947,471.80/293,868,396.78 = 115,162,327.80/x - Step 3: Cross multiply
212,947,471.80x = 293,868,396.78 × 115,162,327.80 - Step 4: Simplify right side
212,947,471.80x = 33,842,568,640,038,820 - Step 5: Solve for x
x = 33,842,568,640,038,820/212,947,471.80 - Step 6: Final answer
x = 158,924,491.35
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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.