Finding the Fourth Proportional to 288,084,923.11, 397,557,163.08 and 155,925,898.21
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Solution
The fourth proportional to 288,084,923.11, 397,557,163.08 and 155,925,898.21 is: 215,177,722.85
Step by Step Solution
- Step 1: Write the proportion equation
288,084,923.11 : 397,557,163.08 = 155,925,898.21 : x - Step 2: Convert to fraction form
288,084,923.11/397,557,163.08 = 155,925,898.21/x - Step 3: Cross multiply
288,084,923.11x = 397,557,163.08 × 155,925,898.21 - Step 4: Simplify right side
288,084,923.11x = 61,989,457,740,301,040 - Step 5: Solve for x
x = 61,989,457,740,301,040/288,084,923.11 - Step 6: Final answer
x = 215,177,722.85
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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.