Finding the Fourth Proportional to 385,365,091.98, 531,804,352.11 and 209,153,089.62
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Solution
The fourth proportional to 385,365,091.98, 531,804,352.11 and 209,153,089.62 is: 288,631,548.71
Step by Step Solution
- Step 1: Write the proportion equation
385,365,091.98 : 531,804,352.11 = 209,153,089.62 : x - Step 2: Convert to fraction form
385,365,091.98/531,804,352.11 = 209,153,089.62/x - Step 3: Cross multiply
385,365,091.98x = 531,804,352.11 × 209,153,089.62 - Step 4: Simplify right side
385,365,091.98x = 111,228,523,317,168,864 - Step 5: Solve for x
x = 111,228,523,317,168,864/385,365,091.98 - Step 6: Final answer
x = 288,631,548.71
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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.