Finding the Fourth Proportional to 289,203,401.08, 399,099,247.95 and 157,043,220.76
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Solution
The fourth proportional to 289,203,401.08, 399,099,247.95 and 157,043,220.76 is: 216,718,859.69
Step by Step Solution
- Step 1: Write the proportion equation
289,203,401.08 : 399,099,247.95 = 157,043,220.76 : x - Step 2: Convert to fraction form
289,203,401.08/399,099,247.95 = 157,043,220.76/x - Step 3: Cross multiply
289,203,401.08x = 399,099,247.95 × 157,043,220.76 - Step 4: Simplify right side
289,203,401.08x = 62,675,831,300,961,824 - Step 5: Solve for x
x = 62,675,831,300,961,824/289,203,401.08 - Step 6: Final answer
x = 216,718,859.69
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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.