Finding the Fourth Proportional to 385,101,119.39, 531,438,999.99 and 208,888,901.99
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Solution
The fourth proportional to 385,101,119.39, 531,438,999.99 and 208,888,901.99 is: 288,266,389.25
Step by Step Solution
- Step 1: Write the proportion equation
385,101,119.39 : 531,438,999.99 = 208,888,901.99 : x - Step 2: Convert to fraction form
385,101,119.39/531,438,999.99 = 208,888,901.99/x - Step 3: Cross multiply
385,101,119.39x = 531,438,999.99 × 208,888,901.99 - Step 4: Simplify right side
385,101,119.39x = 111,011,709,179,917,536 - Step 5: Solve for x
x = 111,011,709,179,917,536/385,101,119.39 - Step 6: Final answer
x = 288,266,389.25
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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.