Finding the Fourth Proportional to 372,948,198.75, 514,704,880.44 and 278,698,686.53
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Solution
The fourth proportional to 372,948,198.75, 514,704,880.44 and 278,698,686.53 is: 384,631,363.30
Step by Step Solution
- Step 1: Write the proportion equation
372,948,198.75 : 514,704,880.44 = 278,698,686.53 : x - Step 2: Convert to fraction form
372,948,198.75/514,704,880.44 = 278,698,686.53/x - Step 3: Cross multiply
372,948,198.75x = 514,704,880.44 × 278,698,686.53 - Step 4: Simplify right side
372,948,198.75x = 143,447,574,126,635,152 - Step 5: Solve for x
x = 143,447,574,126,635,152/372,948,198.75 - Step 6: Final answer
x = 384,631,363.30
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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.