Finding the Fourth Proportional to 355,871,995.20, 533,807,992.80 and 212,544,763.20
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Solution
The fourth proportional to 355,871,995.20, 533,807,992.80 and 212,544,763.20 is: 318,817,144.80
Step by Step Solution
- Step 1: Write the proportion equation
355,871,995.20 : 533,807,992.80 = 212,544,763.20 : x - Step 2: Convert to fraction form
355,871,995.20/533,807,992.80 = 212,544,763.20/x - Step 3: Cross multiply
355,871,995.20x = 533,807,992.80 × 212,544,763.20 - Step 4: Simplify right side
355,871,995.20x = 113,458,093,423,943,296 - Step 5: Solve for x
x = 113,458,093,423,943,296/355,871,995.20 - Step 6: Final answer
x = 318,817,144.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.