Finding the Fourth Proportional to 385,442,269.26, 531,911,011.47 and 209,230,386.66
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Solution
The fourth proportional to 385,442,269.26, 531,911,011.47 and 209,230,386.66 is: 288,738,302.66
Step by Step Solution
- Step 1: Write the proportion equation
385,442,269.26 : 531,911,011.47 = 209,230,386.66 : x - Step 2: Convert to fraction form
385,442,269.26/531,911,011.47 = 209,230,386.66/x - Step 3: Cross multiply
385,442,269.26x = 531,911,011.47 × 209,230,386.66 - Step 4: Simplify right side
385,442,269.26x = 111,291,946,598,579,792 - Step 5: Solve for x
x = 111,291,946,598,579,792/385,442,269.26 - Step 6: Final answer
x = 288,738,302.66
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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.