Finding the Fourth Proportional to 385,382,495.63, 531,828,237.56 and 209,170,527.31
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Solution
The fourth proportional to 385,382,495.63, 531,828,237.56 and 209,170,527.31 is: 288,655,541.32
Step by Step Solution
- Step 1: Write the proportion equation
385,382,495.63 : 531,828,237.56 = 209,170,527.31 : x - Step 2: Convert to fraction form
385,382,495.63/531,828,237.56 = 209,170,527.31/x - Step 3: Cross multiply
385,382,495.63x = 531,828,237.56 × 209,170,527.31 - Step 4: Simplify right side
385,382,495.63x = 111,242,792,890,625,648 - Step 5: Solve for x
x = 111,242,792,890,625,648/385,382,495.63 - Step 6: Final answer
x = 288,655,541.32
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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.