Finding the Fourth Proportional to 255,780,762.87, 352,977,204.02 and 138,305,811.90
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Solution
The fourth proportional to 255,780,762.87, 352,977,204.02 and 138,305,811.90 is: 190,861,885.92
Step by Step Solution
- Step 1: Write the proportion equation
255,780,762.87 : 352,977,204.02 = 138,305,811.90 : x - Step 2: Convert to fraction form
255,780,762.87/352,977,204.02 = 138,305,811.90/x - Step 3: Cross multiply
255,780,762.87x = 352,977,204.02 × 138,305,811.90 - Step 4: Simplify right side
255,780,762.87x = 48,818,798,783,486,512 - Step 5: Solve for x
x = 48,818,798,783,486,512/255,780,762.87 - Step 6: Final answer
x = 190,861,885.92
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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.