Finding the Fourth Proportional to 315,524,571.70, 473,286,857.55 and 145,655,259.70
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Solution
The fourth proportional to 315,524,571.70, 473,286,857.55 and 145,655,259.70 is: 218,482,889.55
Step by Step Solution
- Step 1: Write the proportion equation
315,524,571.70 : 473,286,857.55 = 145,655,259.70 : x - Step 2: Convert to fraction form
315,524,571.70/473,286,857.55 = 145,655,259.70/x - Step 3: Cross multiply
315,524,571.70x = 473,286,857.55 × 145,655,259.70 - Step 4: Simplify right side
315,524,571.70x = 68,936,720,149,042,152 - Step 5: Solve for x
x = 68,936,720,149,042,152/315,524,571.70 - Step 6: Final answer
x = 218,482,889.55
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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.