Finding the Fourth Proportional to 257,394,199.16, 355,201,471.35 and 139,912,539.50
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Solution
The fourth proportional to 257,394,199.16, 355,201,471.35 and 139,912,539.50 is: 193,077,932.81
Step by Step Solution
- Step 1: Write the proportion equation
257,394,199.16 : 355,201,471.35 = 139,912,539.50 : x - Step 2: Convert to fraction form
257,394,199.16/355,201,471.35 = 139,912,539.50/x - Step 3: Cross multiply
257,394,199.16x = 355,201,471.35 × 139,912,539.50 - Step 4: Simplify right side
257,394,199.16x = 49,697,139,891,603,000 - Step 5: Solve for x
x = 49,697,139,891,603,000/257,394,199.16 - Step 6: Final answer
x = 193,077,932.81
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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.