Finding the Fourth Proportional to 321,986,219.80, 482,979,329.70 and 106,575,467.80
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Solution
The fourth proportional to 321,986,219.80, 482,979,329.70 and 106,575,467.80 is: 159,863,201.70
Step by Step Solution
- Step 1: Write the proportion equation
321,986,219.80 : 482,979,329.70 = 106,575,467.80 : x - Step 2: Convert to fraction form
321,986,219.80/482,979,329.70 = 106,575,467.80/x - Step 3: Cross multiply
321,986,219.80x = 482,979,329.70 × 106,575,467.80 - Step 4: Simplify right side
321,986,219.80x = 51,473,748,000,507,928 - Step 5: Solve for x
x = 51,473,748,000,507,928/321,986,219.80 - Step 6: Final answer
x = 159,863,201.70
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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.