Finding the Fourth Proportional to 372,948,204.75, 514,704,888.72 and 278,698,692.53
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Solution
The fourth proportional to 372,948,204.75, 514,704,888.72 and 278,698,692.53 is: 384,631,371.58
Step by Step Solution
- Step 1: Write the proportion equation
372,948,204.75 : 514,704,888.72 = 278,698,692.53 : x - Step 2: Convert to fraction form
372,948,204.75/514,704,888.72 = 278,698,692.53/x - Step 3: Cross multiply
372,948,204.75x = 514,704,888.72 × 278,698,692.53 - Step 4: Simplify right side
372,948,204.75x = 143,447,579,522,489,616 - Step 5: Solve for x
x = 143,447,579,522,489,616/372,948,204.75 - Step 6: Final answer
x = 384,631,371.58
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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.