Finding the Fourth Proportional to 288,028,418.02, 397,480,220.49 and 155,869,381.42
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Solution
The fourth proportional to 288,028,418.02, 397,480,220.49 and 155,869,381.42 is: 215,100,289.48
Step by Step Solution
- Step 1: Write the proportion equation
288,028,418.02 : 397,480,220.49 = 155,869,381.42 : x - Step 2: Convert to fraction form
288,028,418.02/397,480,220.49 = 155,869,381.42/x - Step 3: Cross multiply
288,028,418.02x = 397,480,220.49 × 155,869,381.42 - Step 4: Simplify right side
288,028,418.02x = 61,954,996,094,461,504 - Step 5: Solve for x
x = 61,954,996,094,461,504/288,028,418.02 - Step 6: Final answer
x = 215,100,289.48
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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.